The bars things are nice, true. I actually tap too fast for them to be really useful (most of the time). DEFINITELY helpful for one-handed typing though!
It's actually the tap space on iOS keyboards that bug me. I guess the best way to describe it is that I can typically "point" with my finger to a key and get the right key, but with iOS I have to place my entire thumb over the key for it to register the right key. (I've been told that iOS was designed this way so that when typing with one hand it is very accurate, and the sides of the keyboard are skewed a bit to help when reaching across the keyboard with your thumb.)
You know, I think the thugs were just freaking out that Blackberry was dying