It's not snarky. How many times do I have to say that it's standard practice on HN to put the year in the title of article submissions? There are literally 4 examples of this just on the HN front page right now, 2 of them from 2021:
Typically when someone notes the article year in a comment — which happens all the time — the year is added to the title of the submission, either by the submitter or a HN moderator (who are the only ones with the ability to edit the title), without complaint. These complaints here are really out of line.