I think you'll become a fan. If I were to ask you "Out of ten, how much of a smark (smart wrestling fan) are you?", what would you answer? Basically, how much about WWE do you know? Like how the show is created, the fake and non-fake stuff etc.
Everyone has different knowledge of the business here, and I'm not sure how much you know and don't know. For example, everything Johnny does is controlled by creative (the writers). So his decisions, booking, segments, promo content, physical/verbal action etc are all pre-decided when he goes out, it's a script basically. If you're using those reasons for saying he'll make the show worse then it's unfair and incorrect since creative create all of those.
However, if you dislike him for his voice, promo ability, delivery, look etc then sure you have the right to say as you please about him as he may ruin the show for you. Like Teddy Long for example ruins the show for me. His look, facial expressions, annoying ass voice etc make viewing unbearable, mixed with the way he's booked and his character it literally becomes a chore to watch him.
Hope this post helped