He produced some of Mariah biggest hits he also use to date Janet that's why he didn't like Beyoncé Britney ect he would always compare them to Janet and try to "drag"
Lol poor man he was just being bitter. It can happen to anyone...move on and please don't boo him.
I love how unbothered Beyonce is, she never gave time or even acknowledged all these jealous individuals. That's how she keeps her godlike figure in the industry.