I am a Ubuntu to user now. However, I find myself reading Arch wiki far more and a bit Debian's but barely Ubuntu's. But I agree that Ubuntu is the industry standard and it's acceptable to distribute a deb and test it on Ubuntu LTS and call it a day. Other distros can simply dig into it and make it work. Containers and sandboxes are great, but I hate the concept to only distribute things that way. Snap Flatpak LXC Incus Docker Podman etc. stuff don't work on some restricted/weird environment.