Virtually all software for the desktop is compiled once and then shipped to users and they never see the source.
This works for Windows and macOS because their ABI allows it. For Linux you have to target each and every distro like a whole OS and keep up with it or your app won't run anymore after a few years.
This is also the reason why Linux has package managers and windows didn't have a official one for nearly 40 years. So its not all bad.
What about Linux do you think changes so much? Everything still speaks X11 or PulseAudio on desktop. More broadly, the standard library is...the standard library? What's the specific issue?
But yeah then they need to track distros and such. I hope there are a couple of distros that have better back compatibility eventually.