I think most MLs and most AES states have similar takes on the matter. https://en.prolewiki.org/wiki/Religion

Religion continues to exist long after socialism is constructed but is predicted to eventually disappear under communism. Attempts to forcibly suppress religion under socialism are ultra-leftist and counterrevolutionary.

I’d say there are exceptions to be made, like Salafi jihadism in so-called “East Turkistan.” https://en.wikipedia.org/wiki/Terrorism_in_China#Xinjiang