The archive guy actually called Wikipedia on this lol.
Like if a very infamous site, KiwiFarms can have their own archiving engine, why cant multimillion dollar site like Wikipedia can't? He's absolutely correct that Wikipedia is a freeloader that doesnt want to deal with copyright.
However, I'm not sure if the archive guy is paying it out of his own pocket. It's a massive ad-free site servicing tons of requests everyday, and it has a very impressive technical abilities.
That has to be quite expensive, like he must've some seriously rich sponsors. And his sponsors might be okay with Wikipedia using the site, but this is all just my guess lol.
In the end, it's also perfectly valid for him to refuse servicing Wikipedia: it's his site.