What do you mean by not tolerating if not stifling? If you look at the Mizzou and Yale things, stifling is exactly the right word: "we're just walking forward", "we can't hear you" and others.
> You seem to hold a revisionist historical view that the civil rights movement was entirely unproductive, even though it was unpopular at the start (again, morality doesn't depend on the majority).
My argument isn't that it didn't work, but that you fail to understand why it worked.
It worked because the arguments were convincing, not inherently because people pointed to something and said "this is stupid".
It has nothing to do with being loud (in the literal sense that I understand you to mean it).
Perhaps a better way to say what I'm trying to is: I think that the reason you arrive at the "right" conclusion is coincidental. The approach is flawed and it does and will lead to nonsense sometimes.
Another way to show what I mean is by counter-example: if someone advocated for, say, racial tolerance because they argued that we can't know who's a Christian based on race, I don't care if we agree on the conclusion, the process is a big problem.