I don't have any "hate" for the guy. But IMO, Apple's attempt to delve into the streaming subscription music scene and its acquisition of Beats were both poor decisions. So basically, everyone involved heavily in either of those things are folks I'm happy to see showing themselves out the door at Apple.
As far as I'm concerned, this idea of paying monthly fees to retain permission to stream or listen to the tracks you downloaded from the service is garbage. It was foisted upon people as "the way of the future" - but nothing about it has been good. The music industry itself has suffered under the business model, because it cheapens the value of an artist's work. Practically everyone I know who really loved music has fond recollections of going to that record store and buying the physical tape, LP or CD of their favorite artist, reading through the included liner notes, and proudly adding it to their collection on a shelf or storage rack someplace, where it was on display for everyone to see.
With the idea, now, that all the popular music ever created just sits in some vast "pool" where you can listen to any and all of it, on demand, as long as you're current on some monthly subscription? There's just a psychological change in how much respect a person has for a given album. The artists making it have just as much work to put into the project as ever, but that doesn't come across as well to the listener anymore. When you actually purchased the albums you wanted, you found yourself listening to THOSE songs much more often - because that's what you owned. When it's all equally accessible with a mouse click, it becomes information overload. And if the music service you're on decides to stop carrying an artist's music or album, it's just lost to you.
When Apple Music did such a clunky job of providing the music, on top of those inherent negatives? I can't help but cheer on the exit of the folks responsible. That's all. I wish Iovine well in his future endeavors.