A negative opinion is not an insult. If you've ever expressed a dislike for anything you risk 'insulting' someone by your definition. Making fun of mapex Saturns could be 'insulting' to the man who designed and the people the made (probably with dedication and skill) the product...and I know you're guilty of that!
But it seems you're bashing him for the type of music he plays, I could spend all day here bashing musicians that I think don't deserve their status based on their lack of musicality but they're not gonna read this and quit playing and earning.
Thomas Haake is a very accomplished and skilled musician, as far as I know hes not an immoral person so yeah you can demonize him but the biggest question is why? hes a clown? does he amuse you? the way he talks?
http://www.youtube.com/watch?v=IWINtUCshxY