As an ex-Andrpid dev, all this optimization is what killed the creativity. Every feature you currently have is hyperoptimized (even with dedicated battery optimizations turned off for the most popular apps), and as a result nothing you can’t easily change is changeable anymore.

Want a widget that self updates every couple minutes by connecting to the internet? Can’t have that, even if the user explicitly accepts it. Want to customize behavior of things in the settings? Nope. Want to hook into the phone memory and do crazy hacks? Not even with root. Want to keep running some checks to determine when to send a notification? Can’t do that either, non-push notifications are all scheduled in advance.