Native Americans and Asians do complain they just aren't the leading minorities// whites can be portrayed negatively but since there are so many positive depictions of white people out there, a negative attributed white person/character is looked at as an individual, not so much minority groups.
It's funny cuz some of the same shit you are saying SHEA, white folks were saying about blacks complaining, back in the day, about being portrayed as mammys, shuckin and jivin, blackface, and stuff that you would consider to be really racist. It's not hard to balance shit out, you say Optimus Prime sounds like a corny white dude, wel almost all the other transformers have white voices and they don't have corny white voices. There's one black transformer and he's all talking some jive bullshit.
You guys are even missing the irony that the film makers pointed out unknowingly... they said, if a transformer were to actually scan human media this would be the depiction of gangstas, urban culture, etc. (coding: black people- because there are other kind of gangsters who don't talk ebonics). You know what that means, the media acknowledges there is one kind of overwhelming depiction of blacks, and it's not a normal, or intelligent one.