You are free to like or dislike Coates - I personally find him to be redundant and somewhat banal - but gauging the quality and demographics of the reception a work/artist receives can wield some very important insight into the broader social environment. My issue isn't with the veracity of his claims, it's with how they're being utilized, and by whom.
I'm not suggesting dismissing Coates simply because white people like him, I'm saying it's telling that a certain subset of white people hold him in such esteem. It stinks to me. Also, physics isn't as subjective a field as social critique or racial politics.
In my opinion, Coates is a White Writer. He isn't talking to black people, he's acting as a safari guide of black pain to white liberal tourists. They pick up his book/article, read about how powerful they are (magnified by them superficially eschewing that power), and get off on it. "Heavy is the head that wears the crown." Crucially, they never have to remove themselves from the centre position of this Historical narrative. The vast majority of white people I know love Coates ("He's a Very Important Writer!"), yet they're never willing to make any meaningful acts to decentralize themselves, which is a necessary step in truly defeating White Supremacy. Also, I really dislike how conspicuously he apes Baldwin. Also, his politics suck.