"Normally, atheist crusaders restrict their criticism of religion to Christianity"
Atheist crusader (odd choice of wording) Christopher Hitchens (RIP) condemned Islam with this book responding to the savages' constant cries: `Allahu ackbar' (`God is great') and, as shown by the book cover, Hitchens actually attacked religion generally. He sheltered Salman Rushdie (`The Satanic Verses') in his own home when the savages were carrying out a fatwa, trying to kill, and succeeding with some, anyone close to Rushdie. Newly naturalized American Hitchens was a strong supporter of the war on the savages. In point of fact, the Catholic church criticized Rushdie strongly and supported their muslim counterparts--something like the support the Church gave to the Nazis in WWII, Swede-like, at least until the tide turned--and demonstrated the pusillanimity that you attribute to non-believers like Dawkins and Hitchens.
Read some of the responses Dawkins is getting from his own would-be/former fans in the article I posted. They’d slap him high-fives if he compared some Christian boy to Torquemada, but as soon as he dared go the politically incorrect route and compare a Muslim kid to ISIS militants, his former fans turned on him. As I said, their real beef isn’t with superstition or religion as such, it’s with those evil white European males.