This. I always dreamed of a Debian / Ubuntu Distro where you could fully separate the "SYSTEM ENV" from the Userland ENV with userland referring to system ENV and then if userland ENV has a different, USerland takes presedence when its the user running the command, vs if its some automated service. I do not know if there's something like this for Linux outside of maybe containers? I guess that comes sorta close.

I think GoboLinux might scratch that itch.

Apps are bundled and installed like they are on macOS, and there's a very strict distinction between literal 'System', 'Users' and 'Programs' directories.