> I personally trust RedHat more with setting good defaults than random ArchLinux users (that also recommend firejail) You speak as if these "random Arch Linux

> I personally trust RedHat more with setting good defaults than random ArchLinux users (that also recommend firejail) You speak as if these "random Arch Linux users" have written their opinions on the wiki rather than reasonable conclusions based on how unprivileged user namespaces have been a source security vulnerabilities in the past and is still seen as a security risk. Maybe try not to let your bias get in the way?