If this is the case I remember from a few months ago, then no, it didn't do what he told it to do. One of the basic instructions was "don't change anything in my folders". (That's an extreme paraphrase, as I read about it several months ago. I think on Slashdot. But it's the essence of the original instructions.)
OTOH, I read about it several months ago, and it had happened several months previous to that. So it was one of the really early LLM chatBots. And notice that he wasn't a computer technologist, so one shouldn't have really expected him to have made his own proper backups. (But perhaps his department should have.)