I tell you what... That lg remote still looks like crap and the jubilee one looks like one catered to the older crowd. I'm 43 and can tell this. Apparently they had little input from actual old people.
The problem with LG's interface in general, and doubly so with the new interface, is that it is entirely nested-menu-, and now app-, based. All operated via an on-screen pointer. And that pointer is controlled by, generally quite finicky, accelerometers in the remote. (If you ever played Okami on the Wii then you know what a total pain in the ass this can be.)
Changing inputs is via either an app, or trying to navigate a massively cluttered home-screen where there are several rows of "apps" that scrolls way, way, way off the right hand side of the screen (supposedly you can rearrange/delete things from the home screen but that doesn't really work right and it will usually forget any changes you make almost immediately). And both the input change app and home-screen are generally slow to load and then once loaded require navigating around with the remote accelerometers and then for some reason take more than one "click" to select the input you want. It also all seems to be trying to integrate with LG's home automation system (called something, I forget) that neither I, nor anyone I know, have ever seen, let alone have.
To use this you generally, but not always, have to first get the remote's and tv's attention by quite vigorously shaking the remote.
And to the poster above who mentioned keeping the old remote - that doesn't really solve the problems because the whole UI system has changed.
Anyway... I'm not in the demographic for the "senior" UI and remote but I have grandparents and it's not so much a question of understanding the new system (it's really, really inconsistent and unobvious - regardless of age or skill with technology you basically have to just memorize it) it's that it's hard to even physically navigate the interface because of the precision hand/arm motion needed to do so. If you've got shaky hands or other motion issues it's gonna be really hard to use. And even if that isn't a problem for you, it can still be annoying since you basically can't operate the TV if you aren't literally right in front of it. Although the remote is RF and will operate from basically anywhere, if you aren't holding it like a laser pointer pointed at the TV it's hard to direct to on-screen pointer to the right place on the screen.
LG's used this Magic Remote pointer thing for a long time, they've just made it worse this year.
Also - I've never tried because I don't use any of the built-in streaming services (I don't connect the TV to the network at all) so I don't know how play/pause/FF/RW/etc. work with those since there aren't any buttons for that.