Yeah, this is all true. In any helpful community, there will be some drawbacks and red flags. The question is always if engaging in the community is the highest expected value you can get. For most people, I think the answer is obviously no.

Less wrong should really be viewed as an amusing diversion, which can be useful in certain situations (this weekend I did calibration training, would have been hard to find people who wanted to join without LW). I think people for the most part aren't on here because they think this is the absolute best use of their time, or that it's a perfect community that has no drawbacks or flaws.