And that is why you're earning downvotes :)
This is honestly a great HN thread for wilfully burning karma in fires of brigading. I know my own interaction with it, is in the full knowledge that if I do correctly identify and explore ideas, I'll be massively downvoted for sheerly tactical and ideological reasons. You could hardly have a thread less conducive to the stated aims of HN discussion.
But if you don't take liberal ideas seriously, suddenly you validate authoritarian tactics. The only difference then is that it's ok to use authoritarian tactics just as long as they push my ideas, and not yours. If you don't like authoritarian tactics that right wing people use, you can't use authoritarian tactics to promote left ideas without being a massive hypocrite. Either using authoritarian tactics is ok or it isn't.
Most atrocities in the world come from the authoritarian parts of politics regardless of where you are on the left/right spectrum. My ideas are the right way, and I'm going enforce it using law, mob justice and violence. As opposed to liberalism where diversity of thought is welcomed.
Edit: Why are people down voting me? Critical theories are very open about their critique of liberalism and rationality? And how they've led to lack of change. It's not some weird conspiracy.
I personally think it's not worth it to abandon liberal ideas. As suddenly you validate a lot of illiberal politics. It allows for authoritarianism. I can't stand inconsistencies.