Enablers can be abusive, too.

So let's say you're walking down the street, and you see someone dragging loads of wood up to a house, and they're yelling "I'M GONNA BURN THIS HOUSE DOWN!" And you stop and stare, because nobody would really do something like that, right? And the person soaks the wood with kerosene and gasoline, yelling, "I'M GONNA BURN THIS HOUSE DOWN!" And you're still watching, because you there's no way it's actually going to happen, it's some dumb YouTube stunt.

...and then the person yanks out a flamethrower, and sets the house on fire.