My money is that influence campaigns are active on HN and try to mold the discourse. The whole internet is manipulated to hell, and HN is a prime target, you have a bunch of smart people that probably have oversized influence, how could you NOT try manipulating this place?
Yes to manipulation.
But also it asserts factually a lot that isn't true, which is why I downvoted.
This is most certainly happening. A lot of US-critical articles also get flagged to death, even when they have a lot of upvotes and healthy, civilized discussion.