The most ironic instance of this was in one of the free speech discussions where at one point basically every comment in the whole thread was greyed out.

Presumably because the anti-speech contingent is all too quick to downvote their opponents (consistent with their deleterious pro-censorship views), but then everyone who believes in speech sees every comment defending it greyed out, which makes them angry that their anti-censorship views are not being respected and unwilling to let the other side have an asymmetric weapon even if it goes against their principles, and the next thing you know every comment in the thread is grey.

And that's the danger of censorship. Nobody is going to let the other side do it but not them, but then everybody does it and and then what are you left with?