As someone on the other side of this (who can defend their position if given the chance), I think the idea that censorship of my position is going to help it be more broadly accepted is probably false. On an intellectual basis, it doesn't indicate a defensible position, but we've moved past that: the debate is not a reasoned argument anymore. People are not naturally inclined to follow reason, and if people's values are adjusted to prioritize anti-racism over reason, then there is no contest; reason will lose.