[arboles]

> is that there is a public forum post in which a guy claims to be the site owner.

Which forum post? The post mentioned by the blogger, the post on an F-Secure forum (a company with cybersecurity products) was a request for support by the owner of archive.today regarding a block of their site. It's arguably not intended as a public statement by the owner of the archive, and they were simply careless with their username.