Earlier quoted context omitted.
...by using the latest, greatest new term to shut down debate and avoid addressing the concept of being intellectually honest.
Whataboutism isn't new, nor is it intellectually dishonest to point out when it's being used. Soviets started using it during the cold war era, and it's still in use as a deflection tactic today.
You are absolutely correct, however I would argue that it has only relatively recently entered the common HN lexicon. The vast majority (~675 out of 704^) of comments using it here in the comments are Admittedly the first comment on HN that used the term is 7 years old, but that comment [0] predates the creation of the wikipedia article (frequently trotted out when invoking the term here) by about a year.
As an aside, I'd love see a dataviz app that shows the lifecycle of terminology and memes that thrive in various internet discussion boards.
0) https://news.ycombinator.com/item?id=2944345
^well it'll be 705 including this post ;)