That ignores the power in words and fantasies. It assumes that the fantasizer will always be able to prevent bleed over from thought and fantasy to reality.

That's rarely the case though.

It's not about censorship. Helping someone to exercise self discipline is not censorship. Knowing when that crucial step of self development needs an assist is not censorship either.

It's about recognizing when there's a mass psychological downturn that needs to be addressed before it gets out of hand.