Awful site, this is just a strawman. The dead Internet theory does not claim that real people do not upload things to the Internet, there was never any doubt about that.

The site has absolutely no grasp on what "dead Internet theory" is or what it claims.

>every image, video, song, and text uploaded by a real person on the web.

Which is then followed by a barage of mostly historical photos. Which is very weird, since these historical photos are certainly automatically uploaded from archives and are not some authentic individual expressions by individual Internet users, which makes the whole thing fully orthogonal to both claims.

Dead Internet theory in its original statement is the claim, that most users of the Internet are consumers who mostly read discussions, but do not participate. The small part of users who are actively participating are then engaged by "bots", supposedly to further certain agendas by the creators of the bots, like manufacturing a consensus or deliberately creating infighting.

If you just skim through the linked Wikipedia article you will immediately understand that this thesis can not be disproven by any amount of uploaded archive material.