Yeah, it basically comes down to a complete lack of comprehension for how big something like twitter really is. On the surface level the functionality is pretty simple. But there's so much else going on that nobody sees, and a whole heap of it will be interconnected.

Twitter web, twitter app for ios and android, twitter api, advertising, content monitoring, content storage, caching, serving, twitter for businesses, content algorithms, accounts, privacy features, user settings, theming, ui, ux, embedded content. That's just off the top of my head. I'm sure a lot of these huge companies could be a bit leaner than they are, but usually the size is somewhat warranted.

This guys whole thing is just making stupid takes based on absolute surface level knowledge of things and sounding confident enough that people buy into it.