Well, giving him whatever platform he wants has already gone wrong right now. So if deplatforming him goes wrong in the future, and puts us back into the same situation we found ourselves in before today, at least we'll have between now and then to enjoy things, and come up with a plan C.
Death threats to people whose children were murdered, so bad that they had to leave their home? Men with guns showing up at pizza parlors where people were trying to eat dinner? Does any of this ring a bell?
Well, giving him whatever platform he wants has already gone wrong right now. So if deplatforming him goes wrong in the future, and puts us back into the same situation we found ourselves in before today, at least we'll have between now and then to enjoy things, and come up with a plan C.