Oh you guys. The GP comment was just the sort of flamebait that we don't want on HN, regardless of flavor. We'd moderate it just the same the other way [1]. Big denunciatory rhetoric is just not what this site is for. Repetition and indignation are the two things that most kill curiosity, so repetition of indignation is the worst. [2]
An arbitrary link doesn't prove anything except that we may not have seen a post. That's the simplest explanation, and the likeliest [3]. HN gets millions of comments a year. We don't come close to reading them all, and we can't moderate what we don't see.
We rely on community members to flag the posts that most require moderator attention. You haven't flagged any, including the one you're complaining about here, so it's not clear to me how much you care about this. It sort of spoils the game of get-the-moderators when the mods finally show up and sweep the floor or whatever. For a while it was a sport on Twitter to pass such links around ("see what horrors the Hacker News moderators approve of!") but I hear that's mostly died out.
[1] By the way, the last time you were upset about moderator bias, I ended up giving you an extremely detailed reply. You may not have seen it, though, because it took me a couple days to get back to the thread: https://news.ycombinator.com/item?id=22920602. Read those links—"The mods here are radical liberals", "socialist-leaning mods", "far-left social justice agenda" and the rest—and see how much evidentiary value you still think these gotcha games have.
[2] https://hn.algolia.com/?dateRange=all&page=0&prefix=true&que...
[3] https://hn.algolia.com/?dateRange=all&page=0&prefix=false&qu...