[Lain]

I will say this though, I'm having far better luck getting old linux games working than 16bit/win 95/98 era windows games on 8 onwards.

That's literally the funniest thing I've read all week lmfao

But yeah, the ability to reconfigure shit like that should be in essence what Linux is all about, in relation to a Desktop OS.
If it can't do that, trash it tbh, that's my philosophy. Seems like you'll probably have a good enough handle to get Gentoo running, but Arch does have the AUR so there's probably waaaaaaay more compatibility if you go down that route.