No. Someone replaced well thought out documentation with AI fabrications and let GP take the fall for it.
That is malicious and inexcusable. It's not on GP, the fault lies with the idiot that ran gold documentation through the bullshit machine. Don't blame someone who was wronged, that makes you a malicious asshole.
I can still see a path where the manager was stupid but not malicious. The manager sent on a document which he was too lazy to check at least had the right endpoints but left the GP's contact details on. I could also imagine intentional harm to GP's reputation was the goal, with really clumsy execution.
Either way, that person should not be managing anything.
And if it was an honest mistake, they need to come out and apologize both to the IC and to the team that is using the documentation.