Similarly been using it on Arch for a few years. Looks like they only advertise downloads for Ubuntu and Fedora on their sites, but in the end they're just deb and rpm files. And in the end deb and rpms are just archives of files.

I guess snaps, flatpak, etc remove the step of needing someone to make a package or otherwise work out the dependencies and steps needed to install it on a given other distro, but chances are non-deb/rpm based distros either have their own maintaners that do these things, or the users are happy to work it out themselves.

Technologies like snaps do solve the issue of developers having to think about supporting different distros, but they add extra overhead too. I'd rather they just provide a tar and a list of dependencies and use a package from AUR myself.