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 not saying HN should allow ALL political discussion, but when technological issues inevitably and undeniably involve politics, either by influencing or being influenced, it seems a little cowardly that the general attitude of HN is "just don't discuss it" when the it in that case is core to the issue at hand, even if it happens to be political.
You can't argue with results. The comments on this site are superb. I probably read the comments 3x more than I read the base articles. Take a look at the comments on MSNBC, Fox News, or even the Washington Post. It's shrill emotional blather.
Breadth of experience and background matter. And if sufficiently broad, will cross boundaries of endowment or empowerment, and hence enter into political realms.