Archive.org is run by a registered nonprofit instead of what’s likely a sole maintainer, who while I personally appreciate, does seem to go a little unhinged sometimes (like the dispute with Cloudflare DNS).
This also makes it susceptible to government pressure. It's easy to get a page taken down from archive.org and it won't archive anything paywalled.
I assume that answer is not official, since there's nothing more unhinged than archive.org facilitating the page's originator to make alterations after the snapshot.