I have muslim friends, but what bugs me about Islam, is that it makes some people (a minority, but a significant minority) totally nuts, and makes the rest of them week as water. The crazies take over, while the rest os the islamic world surrenders to a sort of "Dhimmitude" of their own, whereby the nastiest people rise to the top by intimidation and violence.
They are "weak as water" as you say because they know that the things they do that make it possible to assimilate in the west, under the doctrine of their faith makes them subject to criticism.
And how anxious would you be to put yourself up for criticism when you know that so much of the conflict resolution of Islam is done by removing someone's head.
(that's a great phrase by the way... I m afraid I'm going to have to steal it for later use.)