A random macOS binary is more likely to run on another macOS install from anytime in the last half decade than a Linux binary on the same distribution.
Even Apple’s famously fast deprecation is like rock by comparison.
I'm not sure why you think this is a good metric; the space of "random Mac binaries" is far smaller. There's probably something to be said for this "curation," but you pay for it, both literally with money and in limited selection.
I don’t know; you don’t think having Win32 be the unofficial API is a problem?
It literally means Windows will always exist - as the preferred IDE and Reference Spec for the Linux desktop. It also means all evolution of Linux will be ironically constrained by Win32 compatibility requirements.
Even Apple’s famously fast deprecation is like rock by comparison.