Most of that is true (well, except for web frameworks bring great; I don't think anything about web development achieves greatness) but, where Apple is concerned, much of the problem is the short release cycle they moved to about a decade ago.

It's not remotely worth it to me carefully to build a desktop app for a platform that I can't count on staying the same for more than a year.

Actually, it's not even a question of whether it's worth it; in some cases, it's physically impossible for a solo-developer to develop a large app on the shifting sand that is MacOS.