Maybe the reviews were better, but I think in general the trend of trying to replace discussing things with people with an automated service or social network leads to a poorer result. I read a ton and have never used a recommendation tool to find them, I just read books, go to bookstores and talk to people about them.
Second, the observation is that you can literally characterize every online discussion forum that way. It's a pointless comment that borders on tautology. Put people in a space together to share their thoughts, and some of them will end up behaving badly.
Third, it was an observation of the silliness and, frankly, hypocrisy of simultaneously complaining about the behaviour of shouting baseless opinions on discussion forums by shouting a baseless opinion on a discussion forum.
Rose tinted view.