It is true that it is not that controversial and mostly true, the thing is that in most places there is much less repulsion from saying "Marx was wrong, communi

It is true that it is not that controversial and mostly true, the thing is that in most places there is much less repulsion from saying "Marx was wrong, communism doesn't work" than for saying "God is wrong, these divine laws are useless". So religion is a strong barricade against criticism, it uses fears no other ideology can use (fear of death/afterlife, fear of non-purpose), and yeah some people have made of communism or fascism and other ideologies even stronger barricades, but at the end of the day, the less ideologies (incl. religions) there are as possible barricades for demagogues to use the better we out to be.