You should look up the percentage of Americans who believe in ghosts sometime. About as many people believe in ghosts as don't, so no matter which side you land on, the other side is enormous. One of the sides must be wrong, I won't claim which, though only the belief side fails a falsifiability check. Where's our accountability to believing and spreading ideas based in reality again? The believers believe because they learned about it from someone. It didn't happen spontaneously on its own.
It's all just been memes the entire time.