[Edit: note that my comment was reparented, it was originally a response to someone claiming Noam was another "Scam Altman". I don't mind the reparenting or the killing of the original subthread, but I feel like this is necessary context to understand this.]
Noam is the real deal, he was pretty legendary within old-time ('00s) Google engineering. Paul Buchheit had a story about interviewing him with the "how to write a spellchecker" question and then him coming up with something better than the state-of-the-art, then basically delivering Google's spell corrector in his first 2-week Noogler project.