Not only slower, right? I mean, for UIs, there is the same race to the bottom going on as in other parts of the industry.
It needs to be a big show, and everybody must be able to directly understand it without any learning curve or even rtfm.
Everything else (ergonomics, features, ...) are too often secondary values.
I wouldn't say that UIs were great in the 90s. They weren't. It was also harder to implement them. The programming languages were more tedious, low-level, etc.
But as so often, it's disappointing what we do with our additional power today. Snappiness wouldn't even be my first concern, though.
It needs to be a big show, and everybody must be able to directly understand it without any learning curve or even rtfm.
Everything else (ergonomics, features, ...) are too often secondary values.
I wouldn't say that UIs were great in the 90s. They weren't. It was also harder to implement them. The programming languages were more tedious, low-level, etc.
But as so often, it's disappointing what we do with our additional power today. Snappiness wouldn't even be my first concern, though.