On these more controversial political threads: How are certain accounts instantaneously downvoted to dead on HN, within single-digit seconds? Seems automated but entirely too hard to tell. For example, l3m0ndr0p (yeah, I'm totally him/her) made an "America first" type of comment. I know that doesn't play well with a lot of HNers, but seeing it instantly downvoted to dead was weird, too. I know there's a left-ish bias…
Some accounts are dead on arrival due to previous posts. Though in digging through the comments of the account you reference, I can't find anything egregious, so I vouched for the comment. Personally, I would like to see HN quit the juvenile, passive-aggressive shadow ban. If for no other reason than it seems it is buggy at times, and banning accounts that don't need it. But I don't make the rules.
I don't really feel an obligation to not speak about it though, I didn't choose to get showdead privileges and never heard anything about it.