I think he’s saying that you should teach yourself technical skills instead of looking for a technical co founder
Which reminds me of another wealthy character with a JD degree telling people not to go to college. There might be some truth there for a very tiny 0.1% of the senior cohort, but again it doesn't apply to that individual.
It's infinitely more practical than saying, "Go back to high school age and start programming then".
A bigger problem is what you said in the second part. When I had a short chat with Drew when he was looking for a co-founder in 2007, he said almost all MIT students were joining investment banks, grad school in business/law, big companies, etc.