No, the phenomenon is rather that HN readers with strong ideological feelings tend to see the site as dominated by, and the mods in cahoots with, their ideological enemies. This has to be some kind of cognitive bias since the claims people make about HN, and us, are so comically contradictory. If you don't believe me, here are a few typical examples:
By the way, that thread you linked to shows exactly the opposite of what you say, if you read it to the end. This too is typical, except for the part where the original commenter admirably accepts the correction. That bit is surprisingly rare!
https://news.ycombinator.com/item?id=15307915
https://news.ycombinator.com/item?id=15032682
https://news.ycombinator.com/item?id=15585780
https://news.ycombinator.com/item?id=15752730
Plenty more here: https://hn.algolia.com/?sort=byDate&prefix&page=0&dateRange=.... It is perennial.
By the way, that thread you linked to shows exactly the opposite of what you say, if you read it to the end. This too is typical, except for the part where the original commenter admirably accepts the correction. That bit is surprisingly rare!