Inadequate cooling and thermal throttling as a result has always been a problem for Macs, I'm happy Apple has finally taken a more sensible tack that we've seen in the PC world for decades.
Eh, I don't know if the PC world is something to follow in this regard exactly. Certainly it isn't hard to find laptops that have issues with loud fans, insufficient cooling, or even wildly different performance when on battery.
Product like the iMacs didn't, iirc, have significant issues with throttling, but you sure could get the fans to spin up under sustained load.
So you are comparing laptops to desktops? That's very fair.
When I mention products like Noctua fans, I am clearly not discussing laptops, or even OEM prebuilts because I am unaware of any OEM who uses Noctua (or similar "silent" fan manufacturers, such as beQuiet!). Not even exotic boutique builders like NZXT.
PC laptops are built to hit a rock bottom price because margins are way less than Apple's. Someone building their own PC and deciding on fans that are $30
each is not, especially when you consider a typical PC midtower has between 3-8 fans, excluding the CPU HSF.
My point is that is very common to come across a PC with a whole bunch of fans that never go below 800 or 1000 RPM, yet is effectively silent. That is to say, the noise of the fans is not above ambient. And I'm happy that Apple is now designing thermally that way. I am really, really impressed with the cooling solution in the Mac Studio, and it's a dramatically different approach than Apple has ever taken, as far as I am aware. Just pointing out that Apple seems to finally have realized that fans don't automatically mean an unbearable racket.