He’s not telling you to be terrified of the single bot writing a blog post. He’s telling you to be terrified of the blog post being ingested by other bots and then seen as a source of truth. Resulting in AI recruiters automatically rejecting his resume for job postings. Or for other agents deciding to harass him for the same reason.
Edit: I do agree with you that he was a little lenient with how he speaks about the capabilities of it. The fact that they are incompetent and still seen as a source of truth for so many is what alarms me