How is that ironic? It's a well established spam prevention measure not a complete removal of a useful metric. It exists prominently on e.g. stack exchange site

How is that ironic? It's a well established spam prevention measure not a complete removal of a useful metric. It exists prominently on e.g. stack exchange sites and has been a common feature in general on reputation based forum software. What's perhaps ironic is that you can't see vote counts on HN comments _at all_ unless you're the author. So HN has already implemented this feature they just did it sensibly and included upvotes (on comments, at least) too. Most ironically, the front page shows only up-vote counts, something people are citing as a ruined experience in the case of YT removing the dislike count yet is par for the course for submissions on this very site.