Conspiracy theory: They do this on purpose so that Trump wins and they can bitch about it for 4 more years to a captive crowd of idiots who throw money at them.

It's a way of supporting Trump without declaring support.

If they get protections revoked then up and coming sites possibly could lose theirs as well and cement their kakistocratic rule over technology.

Best thing to do is to make sure they hemorrhage users. Get people to leave those who would control them.