As we can now clearly see, that no longer exists, although in reality it never did, it just was a better illusion before, because they had topic names that actually looked like places where people could debate. That was never true, you never could debate, because Percy wouldn't allow that, but it looked like you could if you were a first time visitor.
Actually, in this universe, Percy did/does allow debates. I'm still not sure where you get this idea of not being able to debate here.
They pretended they wanted to discuss science, but Percy made sure that would never be allowed, by silencing all detractors of his world view, and giving harsh warning to the rest about making sure you toe the party line.
I never toed "the party line" (not that there ever was a "party line"), I was never silenced, and, from what I can see, nor was anyone else. Compared to other forums that are concerned with origins, EvC is pretty tolerant. You won't get kicked just because you disagree with someone (or disagree with the "party line").