Yeah, we should probably be trying to jam those channels as well. Surely we can find a way to identify and display messages client-side from the people we want to hear from, while filtering out noise from any decoys, such that the platforms can't figure out who is a decoy and who is a human, rendering their product worthless to a would be election interferer.
But that's a whole endeavor. Ignoring or lying when some research company wants to know about your political beliefs is a nice easy start.