The fact that there are no "Fuck Beta" articles at Soylent is irrelevant. There are none on the "Daring Fireball" blog either, for obvious reasons - that's not where you'd expect to find them.
Furthermore, while Soylent doesn't yet have a huge number of comments it's clear there is a committed community of interested readers that like the site. So it's got lots of hope and lots of promise. I think it's early to boast "Soylent has better comments" but there's certainly proof the gang is heading in that direction.
A bunch of us defected to Usenet too, and are hanging out at comp.misc where there has to date been some really interesting conversation.
In sum, there are now several competing forums run by different groups in different ways. Let the best site win! And to win, you need good articles, healthy commentary, and a committed community hoping to keep "their" place a good one to visit. I think that's kind of the way it should be.