As computers got more complex, latency increased. It's really pretty remarkable to see how things have changed over the years[1]. I do agree that 58ms seems far outside of the range of "next display refresh", however.
> These are tests of the latency between a keypress and the display of a character in a terminal
Wow, the numbers are entirely unexpected. I want to see the latency when you have no display server, having booted directly to a shell.
I imagine modern competitive twitch-reflex videogames (fps, fighting) must have far less input latency - 100ms must be totally unacceptable. Suppose that's the power of a GPU.
[1] https://danluu.com/input-lag/