8ball
Decolonise colons!
Belief systems as opposed to religions don't necessarily demand total acceptance. You might, for example, think that anarchism is basically correct while being uncertain as to the efficacy of a revolutionary general strike, or whatever. Religions tend to be all or nothing. There's plenty of examples to the contrary, of course, Marxist dictatorships in particular, but religions normally start off with faith or revelation and you can't argue with any of that unless you start another one to replace it.
I think anarchism gives a lot more room to colour outside the lines than Marxism.
Could you be a Marxist if you believe the labour theory of value is a load of old pony, or that history was not pointed in the direction of eventual inevitable communism due to the tendency of the rate of profit to fall combined with capitalism’s inherent contradictions?
Jordan Peterson would say yes, but plenty wouldn’t.