Your knowledge of the author of Pingoo makes you more likely to believe that he may have erred? This explanation gains strength for you given your knowledge of his character and personality and professional practices?

When I said I know the author, I meant I know his public internet existence.

https://kerkour.com/announcing-pingoo

He wrote different books about Rust, Cybersecurity, etc.

I just wonder if he may have used, I don't know, a VPN with blacklisted IPs and because he had many connections to his account from it, he was flagged.