[encryptluks2]

Valve isn't abandoning the idea of native Linux games. It is up to the game manufacturer. There are probably about 150 games in my Steam library with native support.

I think the issues you are referring to about compatibility have to do with dynamic compilation and something like glibc, which mostly is a compilation risk that you end up taking but the only times I've encountered it the other packages were already available in my distro and so it was just a matter of updating packages. That is why you should find a distro that is quick to update.