the reason they don’t is because they know they won’t get away with it
What do you mean by “won’t get away with it”? Also the article doesn’t mention anything about atheism, only ‘anti-Muslim’, which are obviously two very different things. I’m fairly certain the reason why you see less Bible burnings than Quran burnings in the west is because the west is predominantly Christian, so of course there would be less burning of the Bible, not because of the notion of some atheists of ‘getting away with it’.