I think people can have whatever religion they want and the very definition of religion is the organized collection of beliefs, cultural systems, and world views that relate humanity to an order of existence. Therefore, just about anything can be considered religion. Look at the Flying Spaghetti Meat Monster for example. Classifying something as "not a real religion" is subjective tbh thus Heretic put that in there because you know you have people that would say it's not a real religion.

All in all, I don't give a stereotypical American's last double cheese burger what someone's beliefs are. As long as you're a decent person and don't believe that your views are superior to others, then you're okay in my book. It's not astrophysics science, although that is immensely easier than trying to share your point of view without someone responding to it in a way that contributes absolutely nothing to the discussion.