Remove NixOS or add warning in the recommendation

[Cyber-Typhoon (Always leveling up)]

I’m supportive of this request, I also found that given their no-FHS complaince we can’t really automate a MAC profile global update:

MAC not a criteria for Linux distros?

I was wondering if native MAC module support should be a criteria. I say this because I was going through NixOS and realized that it has some sort of partial MAC support that is limited to an AppArmor alias workaround for individual or mass but not global security, thanks to the no-FHS complaince. The lack of a native MAC that supports the distro’s file hierarchy system seems an item that we should bring to others’ attention. In my opinion, it undermines the security of this distro. If someday…