If people are reading sites that they feel are optimized for widescreen monitors could you please link them?
I would be very happy to look at examples of what you feel uses a big wide monitor the way you would prefer. In my competitive landscape research of news sites (and I've looked at a lot) I did not see a single one, but that doesn't mean they don't exist.
Ars has never been "fill your whole widescreen 4K monitor". The previous designs didn't do it either. It's not a common thing for a reason, it makes for a poor reading experience. There are studies about text column width and what is ideal for reading. It's not something that just appeared everywhere for no reason.
But, if you have some counter examples, I would love to see them and see if there are ideas that we didn't think of, please feel free to share.
It's a bit more mudane and insidious sadly -- sites were never optimized for ultra widescreen.
It's a long-term change creep:
A decade (and two) ago many sites were optimized for things like, say, [slightly wider]x layouts and their retheme inched towards [slightly narrower]x layouts, over the course of two or three redesigns.
For example, some tech sites used to look better at 1920x1080 a decade ago, but are now less nice looking today on 1920x1080 because of responsive upgrades that made then look better on different screens.
I can't quite place a pulse on a specific research, but one of hundreds possible metaphor is sites were optimizing a reflow to ~1280x and inched towards ~1100x then ~1024x on the next two redesign cycles, but the current designer didn't remember the two-designs-ago.
Many tech sites (since the boom of iPhone and Android in the late 00's) have seen audiences migrate to mobile. Desktop layouts were very bad on those at first, and the optimizing job has helped improved many screens, albiet at the detriment of some of our favourite occasional screens.
We often forget designs 3 designs ago, and most sites don't map the
evolution over several designs, since we feel that 90% of things improved in a redesign. But do three 90%'s in a row, and it's more like closer to 90% x 90% x 90% ~= 65% approx (At least for that specific power user whose favourite layout was 3 designs ago for a specific screen). Obviously, most screens improved, but some power users do obviously die hard (ha!).
It's something that creeps slowly over a longer time period (one decade) thanks in part to the
statistical bias effects I described. In other words, many site layouts more than ten years ago looked better on big screens than today's site layouts (even if they improved as an aggregate for mobile devices).
So along the way, something subtle got lost, e.g. even a minor change like the loss of a 1152x layout in favour of 1024x, or a loss of 1920x layout in favour of 1720x, or whatever. Something
subtle and something
evolutionary, driven by years of partially-generic research not specific only to tech sites.
It's poorly documented and researched, because it is one of the long term evolutions of the Internet, which is why reserch/articles about 20-year-timelines of site-evolution is pretty sparse currently, except on other more sensational topics (e.g. loss of print newspapers, enshittification, IE-vs-Netscape compatibility, etc).
This could be a new-territory research, for heuristically analyzing historical tech-site audiences, the exodus towards mobile browsing, the move to better accessibility/responsive standards, etc. There are times where 2 screen may have degraded, 4 screens improved, etc. And power users are very picky about (slight) downgrades on certain screens.
My general past big-corporate experience is it is sometimes a long-term statistics-driven pressure. People who run sites can only do our best given the data we have, and what data that companies (Analytics) decides to give to site owners.
The nutshell is that themes for big screens in the late 00's and early 10's sometimes looked better at certain browser widths on screens (even if we HAD to resize the browser (or zoom) just right to get the look we wanted), unlike a large number of themes today that reflow better to a larger number of screens, at the very slight (~10%) cost of downgrading certain users / big screens. Understandably so, but is amplified the most for tech-geek sites. The improved responsiveness improved the look of many screens, but not a universal unamious 100%.
People
exaggerate when they say sites were (intentionally) "optimized" for widescreen years ago, when in reality it wasn't -- just that
(A) Either some sites dynamically resized to browser width (no column-width limiting) that is now the norm today
(B) or that the designer over 3 design cycles decreased the maxwidth by 50-100 pixel steps once every 5 years.
(C) or a combination of above;
But many sites did indeed "look" (preference-wise) better at wider browser widths for some power users, since they had the power to adjust their browser more easily back then than today (e.g. less Ajax to messup, or lack of maxwidth, or other 'flexibilities' that was abuseable). Slight change that creeped over years/decade, creating a trigger of vocal frustration/exaggeration, that has a legitimate etymology/cause...
However, it's an exercise that is particularly more-intense for the editorial staff of many old-tech sites, due to the
(A) Maturity and oldness of the tech site; and
(B) The geek-heavy subscribers of those specific tech sites; and
(C) Different programmers working on different design cycles; meaning the oldest changes from more than a decade ago, over 3-to-4 redesign cycles, aren't remembered by the most recent redesigner. Creating larger deltas between current design and several-designs ago;
The multi-decadal slowness of the layout-evolution (deoptimizing away from desktop-only), and the tech nicheness, means this is a poorly-researched topic, sadly, with few citations...
This
may not necessarily directly apply to Ars but still "Useful To Know" for tech site staff, this is endemic to news-sites and more especially the tech-site universe as a whole. Ars has resisted (most) of it so far, where other sites do much more sudden jarring redesigns than thiss. So there is some kudos silver lining here -- that this redesign is less disruptive than the average tech sites' redesign from the statistical bias effects nudging each incremental away from specific power users' preferences.
After all, I run a tech site too...