Yes you are of course correct about SELinux! I actually separated Steam into a sand-boxed "steam" user account. But maybe that's because I learned Unix on BSD

Yes you are of course correct about SELinux! I actually separated Steam into a sand-boxed "steam" user account. But maybe that's because I learned Unix on BSD and never included SELinux or how to use it (and it isn't obvious from a desktop user accounts perspective), I should probably check that out.