No, I don't think he has ever disrespected Black media. Some people might find his sometimes standoffish and reluctant interest in opening up to the media a little off-putting.
Some of that is the media's fault because of how they treated him after The Decision situation, Bron decided to limit himself to the NBA media if it ain't about basketball and even then sometimes he's not too interested in delving too far into that, which is why he felt the way that he did with the whole “face of the league” remarks even tho he was regarded by many as the NBA's face for much of the past 20+ years.
I feel like that's part of why SAS has mixed feelings about Bron because he doesn't give the media, rather him in particular much to work with; SAS is a blabbermouth and likes to have all the inside scoop surrounding NBA shyt.