I think one of the problems is that people will treat these as the same. They follow Buffet's lead because the end goal is money. Everything else is a number on a spreadsheet
Maybe "little know outside of California" is more accurate. I certainly haven't heard anything about this, and it seems like the article is aiming for the broader audience
Won't a centralized platform always have a wider audience than a decentralized one? I think that's one of the hurdles that you have to get over by offering other advantages
You present a straw man argument based on the author's bio from his website. Of course that doesn't represent his full position. He clearly advocates for a combination of both approaches in the article
The article agrees with you that, for learning tools, "on-demand" or "just-in-time" learning is advantageous. This applies for the things that you point out as being commonly cobbled together. However, for learning whole concepts like "AI" or "cloud development," these things are rarely cobbled together and require one to learn how to think through a whole new lens. The concept is larger than any one tool, and the idea is that thinking more broadly will be advantageous in the long run
https://twitter.com/elonmusk/status/1633159188787658757
https://www.reddit.com/gallery/11kzn5v