Same for MacOS 6 and 7 on period hardware. It’s anything but snappy. MacOS 7 on PPC was snappy compared to Windows 95 on Intel, and that’s it. Amiga was snappy, compared to Windows, but I have a working Amiga 600 and it’s not a great platform even for email.
The apps were snappy, but the hardware wasn't. Every menu/window opened immediately and without unnecessary animation... unless it needed some unexpected processing - then you were potentially waiting for the spinning rust to handle the swap file.
The UI was minimalistic, but with better hardware we also wanted nicer fonts, transitions, wobbly windows (I actually miss those) and countless other nice things that take time.
Also, it’s pointless to open a menu in less time than it takes the screen to refresh.
Most desktop have such options, kde and gnome too.for instance.
I am pretty sure this is good old resistance to change. You would disabled them on all your systems, then force yourself to use them that way for a month and I am pretty sure that "disorientation" would quickly disappear.