This was my same thought. We should understand the size of the problem and whether technology can help. If tech can’t help moderating, maybe tech can help in other ways. For example, establishing an anonymous unique internet ID that allows you to be online: if you get three strikes, your ID is suspended and you can’t spend time online for the duration of the suspension. Of course the system should be built so that you can’t bypass the one person-one ID and so that it’s completely anonymous. Also, the ID should not be transferable.