On the other hand, I set up a dual boot with 1 of my 4 ssds being available to both OS just in case. That was 8 or so months ago, and I haven't booted into Windows 10 once since then.

My 165hz monitors are fine at 165, and that was without any config (NobaraOS). All the games I actively play work fine, and the closest thing to an issue is have is my H.O.T.A.S. registering only 12 or so buttons/switches instead of the much larger amount it has, but i haven't put any effort into figuring it out because I only use it for one game.

Experiences vary, but I feel like you're judging a whole platform from choosing a simple Windows replacement then switching to one of the harder OS's to setup.

There's plenty designed more for gaming which seems to be your monitor setup.