I mean, maybe I don't use it much, but it seems to do a really good job of filtering spam and I don't see much harassment. But it's hard to see opposing views unless you look hard enough for posts which are usually shut down by others. Also, the comments have to be approved by the author which does lead to echo chambers, but they seem to know this since their lawyer Ferrest said that "You shouldn't necessarily be kept safe from other people challenging your ideas."
It's also very SF-centric at times, especially with all the self-help posts, but it does do a good job at content discovery since I can get a wide range of topic from the tech industry through to social issues.
I don't know how they'll sell paywalls to users, though. I mean, the internet has a lot of blogs which are already free to see. Plus, I can use my Pocket recommended feature for diversity right?