I get what you are saying, and a situation like this needs to be treated with extreme tact and care. But no, it's not his story, it's a low res approximation of his story as viewed through the lens of the stastical average reddit comment or self published book.

If the father is really into the tech side of it (as opposed to pure laziness), I'd ask him for the prompts alongside the generated text and just ignore the output. The prompts are the writing that is meant for the original commentor, and it is well worth it to take the tact of not judging those by their writing quality independently.