Moyles is your typical bully.
He is jealous of Mika's talent, looks, wit and charisma, so he slags him off/makes fun/belittles him. Yawn yawn yawn haven't we all known people like this...we should feel a bit sorry for him really.
He can have his opinion, of course. We just don't need to hear it every single day, it's so boring.
Mika, I feel sure, doesn't give a flying f***.