I read it yesterday and had a discussion on Git Discord. The author believes people will slop Google-scale repos and Google-type SCM is needed now. Some say a USB-C cable has more computing power than the Apollo program, so maybe.

Banks, airlines, power infra, and other high-stakes customers got computerized in the 60s and 70s. IBM still holds a chunk of that market. Microsoft and Google are not going anywhere. So I guess all that slop will serve something less critical than all of the above.