Comment by mjburgess
HN has become per-thread view-enforced. It's pretty obvious now what the "correct" views are for any given thread, any dissenting comments are downvoted to death. When the next thread comes along, the opposite view might be the "allowed one". There's a particularly egregious amount of veiled partisanship behind a lot of posting too.
This could be a group think phenomenon, or it could be botting. Hard to say. I'd say in at least a few cases, it's someone with access and interest into bot downvotes landing on a thread and using that to suppress dissenting views.
I think the title or the author of the posting tends to draw a certain crowd.
For example, I recognised the name because the author also has a famous guide on network programming. Thanks to his reputation, I was curious what he has to say about learning CS.