This is the guy who invented Ethernet, who knew in great technical detail what he was talking about.
But just like the internet in 1996, I’m sure there are plenty of people in the industry who can also foresee what problems there are going to be with renewables - and an increasingly large number of those people have jobs that depend on solving them.
[0] https://en.wikipedia.org/wiki/Robert_Metcalfe#Web_prediction...