Most of the stuff there would be just... normal now. It's quite unusual for SPAs to have a decent consistent UX. And the slowness would never have been tolerated back in the day.
I think that's mostly it. Design has a much larger role, and form-oriented development with common controls doesn't cut it. You couldn't imagine an app like Facebook in a forms-style UI, it's almost ludicrous to imagine.
Looked at retrospectively, forms were just one step above green screen applications on a terminal, transplanting one set of structural idioms to another, like for like.
If forms are essentially terminal apps, is FB much different from a teletype news service, with hyper-filtered content and an infinite set of data sources?
I see massive sea change in connectivity and immersiveness of today, but not really in what we're trying to achieve.
