I think the effect was less about it being correct or not, but instead more about if fly.io would treat humans as first class users compared to agents or not in the future.

The message is fine, but it was a weird choice to have it on fly.io instead of a personal blog

It's just marketing, going with the times of lots of vibe coders now suddenly wanting to put something on the Internet. I wouldn't read too much into it as a fundamental philosophy.