I'd say that pointing is inherently slow because it involves checking where the cursor is, where the target is, moving it in that direction, then stopping at the right time. With a typical keyboard-based browser interface clicking the update button would have been a 2 key combination. Two discreet steps without any timing or measurement nuances.

I guess which is better for me doesn't have to be so for someone else. Mouse interfaces do have a certain simplicity to them.

Check demo animation on Saka Key's readme: https://github.com/lusakasa/saka-key