With Putin talking about the orthodox church being holy and using to justify some conservative bullshit, all I can remember was the bolsheviks going around the country proudly declaring that cities were now "officially godless" and redistributing the church's gold amongst the people and using it to pay for electrification projects.
It's not an alien notion for sure. I've read plenty from individuals that have taken a syncretic approach with socialist thought and their own respective religious ideologies. Sometimes I do wonder if religion would be completely vacated if we ever reach that high form of communism. I don't have any concrete answer to that but it is interesting to think about.
I doubt it because people said the same thing about the switch from feudalism to capitalism