rec of the week
It may be a more popular stance than it appears because, as the USSR émigrés at work say, "it's hard to know what people really think under censorship."
I share your view that censorship via amplifying monopolist's power then hoping to guide it through nth party boycotts is a quack cure worse than the disease. I would defend our view differently, though. I don't think the approach is mistaken primarily because it will reduce leftist power in the long run. I think it's mistaken because promoting one's ideas through censorship is a great evil that has been tried before.
Of course it gets complicated fast, but it doesn't start out so complicated: ideas need to be tested by granting agency then earning trust, not by seizing power then denying agency.