I don't think the person in question is calling for government action, here. It seemed to be raising the topic of whether criticism of PG was forbidden on HN,

I don't think the person in question is calling for government action, here. It seemed to be raising the topic of whether criticism of PG was forbidden on HN, and if so if that would be a problem. Not necessarily saying I think there is a problem, I haven't thought about that long enough to have a firm opinion, but the fact that the question is raised isn't really related to the fact that HN is a private forum, since I don't believe anyone was advocating that HN be prevented by law from removing articles critical of PG. It's much like how freedom of speech gives one the right to say whatever one wants without government coercion being applied, but that doesn't mean people cannot discuss whether what is said is appropriate or meritorious.