This seems to be a primary driver of the software-rot found all across Apple's ecosystem. iOS is generally pretty well-maintained; macOS less-so. Apps like Music are kept in better condition than, say, Podcasts. Etc. You can almost directly correlate how unpopular a piece (or feature) of its first-party software is with how buggy it is. Which I guess makes some amount of sense, but it really tarnishes Apple's image as a company selling high-end products.