Good gracious, where do I begin?! It is a problem because of the conflicts, misuse of power, a belief that there is a spirit out there somewhere controlling, listening, etc etc. Whether people believe it is loving, in spite of the billions who have died since the idea of gods began or not is okay if they had always passed on the message to subsequent generations that said focus of belief is a belief and has zero objective evidence to back up that imagined existence.
Of course I support freedom of belief, but I do not support the teaching of falsehoods to children
There's the evangelical atheism you've invented--with full vigor.