At the end of the day, it's against site guidelines:

Please resist commenting about being downvoted. It never does any good, and it makes boring reading.

Please don't bait other users by inviting them to downvote you or proclaim that you expect to get downvoted.

https://news.ycombinator.com/newsguidelines.html

You may not agree with it (which is fine), but it's largely accepted by the community.