Your comment was marked as "dead" and I just vouched for it, so does that count as not trying to censor every idea that disagrees with me? ;)
But I'm not convinced. There have been plenty of racists with arguments they consider rational. I think they are factually wrong, but surely the real point is "what you are saying is offensive and immoral" rather than try to argue that (eg) the costs associated with keeping black slaves is too much for the income the bring.
If a viewpoint is censored (or controversial), it is human nature to seek it out, end even compensate it with more "weight" than it might otherwise be given. This is why the latest in rhetoric is not to censor something, but to explicitly acknowledge it and damn it with faint praise (or claim it is mediocre, boring, denounced etc).
Furthermore, another way to damn a viewpoint is to associate it with poor arguments; or to strengthen a claim surround it with strong (or at least battle-tested/accepted/familiar) arguments. You should be happy that a true claim is discussed, creating stronger arguments, and making those better known; and that false claims are also discussed, explicitly demonstrating the poor arguments used to defend them.
Now, whether a poor/strong argument is recognised as such, that is another issue, and goes to the "rational literacy" of the general public, which certainly is an issue (on both sides).
As Aristotle apparently said "It is the mark of an educated mind to be able to entertain a thought without accepting it."
If we can't even discuss certain topics, if we can't even think things through, then we've entered the realm of thought police.