Android 2.x sucks. No doubt. The scroll performance in the browser is crap - no hardware acceleration. It barely works for my cash register app - but it does work. I avoid scrolling in it though.
OTOH, Icecream Sandwich is kind of the standard - the scrolling is still weak (heck the graphics are weak overall) but not insurmountable.
I honestly don't know why people buy those things. They suck compared to an iPhone. But I do like the open nature of them for custom device development.