Why Can't Musicians Speak?

So I was watching a selection of Music Videoz by an R&B artist and btwn the videos she would comment on making the videos. There I sat on the couch looking almost admirably at this young women who had pulled herself from the proverbial bootstraps to become a very talented star and then she did one of my most hated of pet peeves: used but as a non-sequiter. I would like to believe that most Black musicians and athletes at least got to the 10th grade before dropping out and when I hear them on the TV i would like that to be reflected but I'm living in a dream world, because the hour I spent jamming to her music was woefully disrupted by the cringing I did at her speech..loose vowels, bad grammar, improper adverbs..it was a mess. And then I thought to myself why can't musicians speak? They sound amazing in their songs but have you ever heard T-Pain or Soulja Boy in an interview. Good Lord. How can you be a "role model" to this new generation of children when you speak chicken scratch. I mean actual chicken scratch. You've adapted the actual written form to a spoken language. Isn't time we demanded a little bit more from our musicians? Shouldn't they be able to sing and speak intelligibly? Just a random thought.