Marxism isn’t a religion, it’s a social and political science. It’s not a list of rules about what you’re supposed to do, it’s a method of understanding social and historical forces. The socialist revolution was supposed to happen in Germany according to Marx. When the conditions of the world change the people who are alive then are the ones who have to interpret and react to them. So Stalin was doing Marxism in the context of the 1930’s soviet union.
They make it sound like it’s going to protect you from identity theft