Ubuntu: They break shit, it’s half baked, snaps, and Canonical is really into vendor lock in.
Arch: I really have better things to do then baby sit my install.
RHEL: Containers were created for reasons, and one of them was RHEL.
Any Linux without systemd or glibc: Mistakes were made, and then different mistakes were made trying to prove systemd made mistakes. Musl based Linux distros are going to have compatibility problems, so I might as well run a different OS. The BSDs are *nix-like systems without glibc with a history and larger communities.