We've seen many rap beefs & artists who've been vocal of not liking each other. So it's very rare when you see producers express they're dislikes on one another.
In an interview with GQ, producer Diplo, answered a question about why he hasn't worked with Rihanna. Somewhere in his answer he mentioned how he was in the studio with Rihanna, Future, and Metro Boomin' "before anyone knew who he was." That quote struck a nerve from hip-hop's popular producer to date. See what Young Metro had to say HERE.
Did Metro overreact or nah?