I feel like you missed the fact that he is obviously aware of the market/hardware reasons that caused programming to evolve in this manner, but it doesn't change the fact that this current model of programming may be a false evolutionary pathway.
He is pointing out experts tend to deny a perfectly valid way of exploring technology, because it doesn't follow the defined community-accepted standards built on assumptions of hardware and efficiency.
He's not not knocking the current model, he's not even saying these other models shouldn't have died, he's saying they shouldn't be forgotten and should often be reexamined in light of new technology which might make a better home for it.
Yes, he is actually, repeatedly. For instance, at 9:30 in the video: "There won't be any, like, markup languages, or stylesheet languages, right? That would make no sense".
He is pointing out experts tend to deny a perfectly valid way of exploring technology, because it doesn't follow the defined community-accepted standards built on assumptions of hardware and efficiency.
He's not not knocking the current model, he's not even saying these other models shouldn't have died, he's saying they shouldn't be forgotten and should often be reexamined in light of new technology which might make a better home for it.