It's unclear whether Descartes, Spinoza or Leibniz would have lasted a day without being voted down into oblivion.
So? I don't see what this is supposed to prove.
I know, I loved that quote. I just couldn't work out why it was presented as a bad thing.
You think the average person on LessWrong ranks with Spinoza and Leibniz? I disagree.
If you know more Eliezer Yudkowsky facts, post them in the comments.