Using AOSP-based Android roms, I haven't noticed any big changes in years. In current "android 16" and my old "android 10" device one couldn't really tell a difference. Very simple UX, no bloatware apps, no hidden drawers coming out from sides.
I've tried the vendor ones by Samsung, OnePlus etc with fresh devices and this Android experience really is awful.
I wish there was more love for more vanilla forms of Android. I would trade more simplicity out of the box and regular software updates over the current situation.
Personally I'm blown away by Motorola options in the budget range. For raw value alone there offerings are hard to beat.