The graph showing that "Bank teller employment has fallen off a cliff" is not zero based. This is pretty damn bad. The graph looks like it's going down 90%, but it's actually going from 350k to 150k. That's a ~60% drop which is a lot, but not "falling off a cliff".
60% is pretty well in “falling off a cliff” territory. The graph is misleading but that phrase, to me, is not.
60% job loss is not off a cliff?
That huge job loss also means no hiring. If you were a bank teller you would seriously need to consider a job switch
Probably a bigger sign to look for would be average age of bank tellers vs other occupations. If it's trending higher, then it's likely just people who've been doing the job for a long time and serving other older customers. I have a feeling not many young people are becoming tellers or even needing their services, but I can't verify it.