It is always the same response with them. They feel that they are always on the side of truth, and that therefore anyone who does not believe what they believe is spreading untruth, and therefore must be censored. They cannot believe that they could be wrong, or that eventually someone in power might find their opinions to be misinformation. They also cannot wrap their heads around the fact that science is never "settled" or a matter of "consensus." Even so-called scientists will often use the "consensus" argument. No matter how many examples you give them of scientific consensus being wrong, they still don't believe it could be wrong now, because now we are enlightened, whereas in the past people were ignorant. This is their logic.