See the "Background" section of the Wikipedia RFC on banning archive.today links: https://en.wikipedia.org/wiki/Wikipedia:Requests_for_comment...
They bulk replaced one string (a name) with another one across many archived pages, and added malicious code to all archive pages that would rapidly send requests to gyrovague.com in an attempt to DDOS them.
Just out of curiosity, how do we know that what is in the Wikipedia comments is accurate? I have no skin in the game. I was just wondering. Anybody can post anything on Wikipedia comments. I find it odd that Ars Technica would use that as a source. Maybe it's fine for gossip and speculation but it shouldn't be in Ars Technica then.