> wifi setup 1000x more complex than windows/osx

Which DE? Ultimately most DEs use NetworkManager but they have different GUI frontends. KDE Plasma's frontend has all options inside one menu. I never found it more difficult than Windows but that being said, I've left Windows behind about 9 years ago after years of dual booting, so my Windows experience might be outdated.

> Lots of extreme battery drain when trying to do certain activities

I guess that's due to no native video decoding. It's getting there, very slowly. It's being worked on as we speak: https://bugzilla.mozilla.org/show_bug.cgi?id=1610199