In my view it's devolving into an awkward, less and less usable system. I run a phone with stock Android 9, and it does not let me set notifications to "vibrate only". I only have a choice between muting the phone(which makes me miss calls etc. because it basically plays dead) or letting it annoy me with a notification sound every couple minutes. There is no inbetween.
Also, it does not have a way to toggle automatic screen brightness aside from the switch buried in the settings.
This is, to put it mildly, insane and near unusable in my opinion.
The last 5 years I've used exclusively Windows Phone 8 and Blackberry 10 OS, and both of those are still years ahead of Android's usability even though they're both not being actively developed anymore for almost the same period. I still don't see a current smartphone on the market that comes close.
