It's commonly thought (and obvious) that Yud wrote the book about himself so I doubt it. It doesn't really fit the rationalist playbook either, they take themselves excessively seriously.
He's too fragile and prone to overcompensation for that, nice try. Of course he's going to back track after getting mercilessly mocked for it and then claim it was just a joke.
The first few chapters have a song scene parodying ghostbusters and a joke about the protagonist biting a teacher in a tantrum as a young kid. There's plenty of elements of crackfic parody in it.
At the end Harry is basically a Messiah that can order the magical world to provide emergency medical aid to everyone in the whole world and turns Hermione into basically an angel; not really seeing the story itself saying he did anything wrong...
