From the outside, it looks like there are just power struggles and fiefdoms held by the old guard that have resulted in the stagnation and the worsening quality across its operating systems. Even today you cannot search and find all the things in the Settings app on iOS, which has been a longstanding issue. ScreenTime is totally broken since iOS 18 and shows tons of minutes of apps that I open for just one minute everyday. There are many more irritating old bugs as well as new bugs being added regularly.
The recently rumored to be forthcoming “26” numbering of all its operating systems and the cementing of annual releases with new feature addition doesn’t bode well for improving quality. The way Apple’s software teams have been working, a tick-tock cycle of improvements followed by stabilizing every other year is the only way things can get a little better. That’s a pipe dream for me anyway.