I like this kind of post. Here we've got somebody thinking it through trying to be a better human. Nothing wrong with that. We're all better for having done some of that work.
It's good to want to be a better person, though.
Besides, I think the author's point is less that HN made them act a certain way and more that they've noticed a lot of negativity here and that we should be aware of that.
But, I do not find it compelling given my own experiences and how online discourse does influence me.
The big win was recognizing that and then taking an active role in managing it toward what I see as better, or good.