A tiny minority of hardcore haters say things like that, of course, but the vast majority of muslim clerics dont resemble your comment in the slightest. Many have spoken strongly to the contrary. Anyway, what kind of logic could possibly possess you to think that it's ok for a Rabbi to act like a Wahhabi nutcase?
First refugees travelling on Hungarian bus arrive at Austrian border (Reuters)
from the article: Rabbis can apparently say whatever they want