Earlier quoted context omitted.
Whether I agree or disagree with your characterization of him, what does that have to do with whether people who run online communities should be responsible for moderating them? It isn't on topic, unless you want to say, "Since Dash is an asshole, that is proof that there exists at least one asshole on the internet, which supports part of the argument he makes." The premise of the argument is that moderation is a mo…
It matters because his calls for centralizing control of the discussion on a site through strong moderation gives him a lever to pull through social media outrage. Without all of the moderation tools he suggests in this post, he could try to shame the site owners to silence a point of view he doesn't like (which he does regularly) and they wouldn't technically be able to do anything about it. The more moderation tool…
Simply state, "The problem with moderation is that it can be used as a hammer to ban dissent, &c. &c."
Put like that, there is no ad hominem, and it can be debated on its merits. By the way, the most amusing thing about that argument is that we would be debating it on a moderated platform, that we both use precisely because it is moderated.
If HN was unmoderated, it would cease to be valuable to the people currently using HN.