You know what's funny, after listening to Myles Garret talk (the 1st pick in this draft), I bet he would have been thrilled to have an orangutan announce him...or maybe someone dressed as a dinosaur.
I think the gripe against Mayock is that he didn't take the opportunity to voice his mind against a Walking Dead commercial, an advertisement for Vegas, an advertisement for a golf course, or a ex-player turning the entire announcement into an opportunity to troll another team, but rather voiced it against an organization dedicated to conservation and learning. If I understand correctly, the zoo was asked to do this. He should have bashed the overall idea of spectacle...not the orangutan/zoo. He might have a point that the focus needs to be more on the players, but he made his point in an unprofessional way.