DDoS hit blog that tried to uncover Archive.today founder’s identity in 2023. […] A Tumblr blog post apparently written by the Archive.today founder seems to generally confirm the emails’ veracity, but says the original version threatened to create “a patokallio.gay dating app,” not “a gyrovague.gay dating app.”
https://www.heise.de/en/news/Archive-today-Operator-uses-users-for-DDoS-attack-11171455.html:
By having Archive.today unknowingly let users access the Finnish blogger’s URL, their IP addresses are transmitted to him. This could be a point of attack for prosecuting copyright infringements.



It supports the goal of free knowledge, so I think it wouldn’t veer far off its mission
You’re misinterpreting what Wikimedia’s “free knowledge” mandate is about. They have a hard-line requirement that the knowlege they distribute is legally free, for example - it has to be under an open license. archive.today is quite the opposite of that. They don’t just archive any old knowledge willy-nilly, they’ve got standards. And so forth.
Simply running an archive.today clone would not fit. The “source documents only” archive would already be stretching the edges rather far. There’s already Wikisource, for example, and it’s got the “open licenses only” restriction.