I can sympathize with those who forsake Christianity as it so often has to do with churches that have corrupted the teachings
I think it is possible to believe in an idea, and maybe a person (e.g. Trump) but not in an established religion. If you believe in a person, it is possible to change your mind and reject the person.
Skeptiko is about free exploration of ideas, as opposed to taking one source as gospel (sorry for the pun).