That's a great shout because I'm sure a lot of people would otherwise just discredit this take as just another anti-ai skeptic. But he probably has more experience working with LLM's and agents than most of us on this site, so his opinion holds more weight than most.
If you were going to dismiss an argument because of who it comes from rather than its content, that is a flaw in your thinking. The argument is correct, or it isn't, no matter who said it.