... This is the ramblings of an illiterate.
out to play tourist today :-D
Go to the Bureau of Labor Statistics website. Find the number of tellers working for the first year of ATMs (1984) and then the number of tellers working for the last available data. You will see that the number of tellers has increased. This does not take into account the number of programmers, manufacturers, maintenance people, or even the people needed to fill the machine.