Now this article seems like its not even serious, but just in case it is here are my thoughts.
I agree with you on 7 things, but here are my thoughts on the other 3
6) as much as froyo did improve function and responsiveness, it still doesn't really come close to iOS. i've never seen lag ever on any iOs device, and that's pretty impressive. as someone else mentioned, i've never not seen lag on an android device
7) i think he was talking about the software and not the hardware, and i agree with him there. software fragmentation is probably what causes the lag, and the unresponsiveness because there's a million ways to do the same thing. the tons of home launchers on the market are a testament to that. my launcher would lag to the point where i wanted to throw it against the wall, but once i got launcherpro it reduced greatly.
9) saying "not everyone uses iTunes" really doesn't mean much. it's like saying "not everyone drinks water" (hahaa extreme example) but my point is i believe its around 200M people who use itunes...so to say not everyone uses it doesn't mean that a HUUUUUUUGE number of people don't use it. i'm sure more than half (probably close to 80-90%) of the people on this forum have used or still use itunes still. and itunes is not just about syncing music, people use it to download tv shows and movies and android has nothing like that to compare