because muslims in general have given up islam.
i do agree with the points in the presentations, but through our behavior we have given them the excuse for such allegations. and they make the most of it.
Think about it, even the worst enemies of prophet Muhammad (pbuh) and his companions could not point to a flaw in their character and humble manners.
is the same true for us? Are we good ambassadors of islam? if the answer is no, we have no reason to blame others.