The article itself was a bit disappointing because it focused on political issues. In my opinion the strength of HN in this regard is that it is both a "sjw cesspool" and a "haven for alt-right", as evidenced by the fact that a comment on a controversial topic can easily float near zero points while raking in both upvotes and downvotes. And even those who refer to it as "the orange site" still come back and comment. In other words, HN may be an echo chamber but it is a pretty big one with a lot of voices in it.
I'm so happy I don't see the world this way. This type of worldview is so tribalistic.
Positive discussion is frequently derailed and halted by the "alt-right" presence on HN. Their presence here should not be welcomed, much less seen as a strength of the community.