Right -- the first thing I did after reading a few paragraphs was load a complex web page and try scrolling it -- it continues to render just fine (on a single core iPhone 4). I've got a very old iPod Touch which does seem to lock up page draw when I scroll.
I think that the simple answer is that there's no simple answer -- which is what the earlier post was pretty much saying.
There is a simple answer, but it's not one that most people who are in a position to fix it will like; "it sucks now and I couldn't care less why. Fix it ASAP because it's killing your UX"
And as far as the author of this article goes…maybe he is off on the technical stuff, but he understands the most important, which is that UX is broken in Android for this, among a few other reasons.
Someone open a big report against AOSP? All versions, high priority; "UI Anmations Broken"
I think that the simple answer is that there's no simple answer -- which is what the earlier post was pretty much saying.