I haven't seen TF2 yet, this is the first I've heard that some of them can't read. Yeah, I don't have an explanation for that one.
But the reason given in the first film for their "cultural" and grammatic behaviour is that they were monitoring earth communications for some time before they came. If an Autobot had the kind of personality that gravitated toward a "hip hop" personality, for instance, wouldn't it make sense that he'd act like some MTV rapper? What is the predominant black cultural image out there? Sidney Poitier? Hardly.
Maybe we should pick a beef with BET and MTV and ask them why most of the black people they've put on TV and beamed out into space for the past 15 years is an annoying, gold-toothed, ill-spoken idiot?
I'd also point out that Jazz and one of the two annoying little buggers are voiced by black voice artists, since that seems to be a big part of the reason no one had a problem with Blaster, a robot that turned into a ghetto blaster, liked to dance and talked like a hip hop radio DJ. This criticism isn't new, people had a problem with Jazz in the first TF movie too, and that was a pretty mild stereotype. I
know people who act and talk like Jazz.
I'm not trying to defend Bay's creative integrity here, like I said I haven't seen TF2 yet. Probably will today, I'll let you know what I think about it.