I'm just guessing, I'm still using Windows (though I would have made the swap literally decades ago if the games I like in particular ran on Linux just as fine): it's not about functionality; Windows was designed to be a great tool to do your business.

It's everything else that you pay in return, the price being the least of the problems. Forced ads, forced software, insane amount of "telemetry" (half of which is just data collection for their own gains), to name a few. Year by year it's getting harder, more complicated and more tedious (and less and less doable) to remove all the forced ads, reverse all the forced program defaults and automatic bloat. If you have to look it up on the Internet how you need to edit the registry to be able to stop certain processes/services that annoy you, then it means they don't want you to stop the annoyance. A few patches later you can't even do it. Dishonest stuff like that.

If you're fine with everything that Win11 means, including stuff that drives others up the wall, then Win11 is for you and there's nothing wrong with that.

As much as others here love to shit on certain games (like League of Legends or Valorant), I still find them fun to play and I wouldn't want to say goodbye to them just because otherwise I'd prefer Linux. There's a reason they aren't supported on various OS's at the same time (developing anti cheat on multiple systems is just super labour intensive, and opens up way too many loopholes/exploits/bugs for cheat developers), and it pretty much applies to ANY multiplayer game. If I only played single player games I would switch in an instant.