Samsung Tablets come for a long time with OLED displays and seem to have no issues. I have a 3 year old Tab4 in permanent use, it shows camera feeds 24/7, no burn ins after 3 (or four?) years, for a normal use Tablet at least 3 times that.
2 years ago we got a very cheap Chinese Tablet to test(10.5", 2560x1600, super amoled, 4GB/128GB, fingerprint blah blah) for $200. Runs great, amazing screen. Alldocube x. Including case and keyboard.
But OLED is cheap.
my 12mini is a vast improvement over the SE2 I had. Only bought it for the size but will last me now for years. Pretty perfect. No idea what this PWM issue is, I tried everything but can't get the screen to flicker.