He's obviously trying to avoid having to do this, so linking out to the website is the "hey look we're doing the right thing" when really they aren't.

Chances are more people would identify the service as something to block or report for spam if the text were more descriptive, so he's counting on people not clicking the link in the footer but at least he can claim it's there, even if it's ineffectual.

They’re literally using an LLM to write the email.They could make the disclaimer text detailed and descriptive per email sent. So the use case they’re citing here that “well what if it’s just an email that was forwarded by the bot” doesn’t apply because you could add a different disclaimer message at the bottom of that email vs the spam example above.