> Unless you want to ship something

I have never had problems distributing binary builds for Linux. There are a number of system libraries that are backwards compatible: glibc, asound, libGL, etc. - test on the oldest you want to support and any other libs you just ship yourself. And that would not be different with only one distro either unless you only care about one release of that distro.

Would you better not able to solve at all?

Ship and troubleshoot solved by distro maintaires. Niche products solved by Flatpak and its runtimes.

I'll stick with platforms that don't require third party volunteer maintainers just to be able to run software, thanks.

See, you have choice and enjoy it. So do I.

What I find strange is sitting on the place one does not like. There are so many choices around.