Zed and Gomez apparently split in April after four months of dating.
Diplo, 36, slammed the 25-year-old producer's career by claiming he has stopped being "cool" and he and his record label are just focused on record sales, before then insisting his rival's recent romance with the former Disney star was manufactured to create a bigger fanbase.
"I just think that (Zedd) came from such a cool place, and now he's been pegged as a money-maker for a major label to do EDM, which to me is not even a genre.