Feels like a list of stuff where he massively underestimates the complexity of the fields he's talking about. Drag and drop UIs have, as he indentified, been tried. They were a leaky abstraction where incremental functionality was difficult to implement.
He's not massively underestimating the complexity as much as saying that huge swaths of that complexity are unnecessary, were it not for business requirements that often require us to do things the cheapest way possible (like hiring "fungible" web engineers to build an electron app instead of paying native platform engineers to build a first-class native app) -- and thus cause long-term harm.