i read the article, pretty interesting, especially the examples, since im a fan of loony toons and bugs bunny.
white people incorporate black culture (music, look, slang etc) into their own personality because they like it and want to emulate it. from what i see the twins doing by acting black in the movie, its the same concept, they have come to earth and adopted "black" personality because they thinks its cool and they want to emulate it. i honestly dont think it was the twins or creators (writters/directors/ animators) intention of adopting black personality as an insult to black people.
and other characters in the movie such a wheelie and jetfire being based on stereotypes, i thought they were awesome. i love them both as characters. im part italian and didnt get offended by wheelie being the joe pesci of transformers or jetfire being and old scottish like my girlfriends grandad i thought it was cool that he had that personality.
and my statement about dont like it dont watch it, for me still stands and no amount of arguing will convince me otherwise, (i stand by it so dont bother attacking me on that)