I absolutely believe that's the case for a lot of regressive leftists. It's probably not even a conscious thought for most of them, but their subconsciouses are keenly aware of what of what happens to those who offend Islamists. They remember the Salman Rushdie affair. They remember what happened to the Dutch cartoonists. They remember what happened to Charlie Hebdo. They remember
all the riots and attacks over that stupid YouTube video. They may even remember what happened to
Asia Bibi,
secular/atheist Bangladeshi bloggers, and other people who have been arrested/executed for blasphemy against Islam. You
cannot be living in the Year of our Lord 2017 and be unaware of how violently Islamists react to criticism of their beliefs.
I mean, just think about it. The best thing that will happen to you if you become a critic of Islam is to be branded an "Islamophobe" (already social suicide in the eyes of progressives). The worst thing that will happen is that you'll get fucking murdered. If you become a critic of Christianity, well, all you'll get is fedora jokes and pissed off Christians telling you you'll burn in hell. Which is, you know, a lot better than being murdered by people hoping to send you to hell themselves.