Except windows doesnt have 100% compatibility guaranteed either , there are cases where old games and programs are no longer working on newer versions of windows. These same games and programs in many cases will work on linux as there is a compatible wine prefix.

I get your point though, I’m pointing out the 100% figure is not true for either os.

Do what you can and dont let perfect be the enemy of good. You’re still ahead of the rest of the crowd who don’t give a shit.