Latency of even a 300 baud modem is essentially instant, in some cases faster than modern heavily buffered cable modem services. Hit enter and it starts responding instantly.

People are used to a second or so latency on modern web pages, when shopping on amazon or whatever. Then they see a 300 baud modem vs a 30 megabit cable modem and think if "hit a key see response" takes a second at 30 megabits/sec then at 300 bits/sec 100K times slower, it must be "hit a key see response 100K seconds later" LOL no nothing like that at all.

UIs were generally lower latency aka "faster" back in the old days than they are now.