You don't have to be a LAME to be a good pushback operator, and I have seen some real pros in action.. But you DO need to have a professional attitude. There are, or used to be at least, some real pros. It's is a skill in its own right to be a good rampie and its a bloody hard job. A10 min a/c walkaround doesn't give you the full experience of being on the ramp for hrs. Its either hot or cold, dry or wet, allways noisy and allways dangerous and on top of that it's physically demanding. Nowdays you have the pressure of the boss wanting things done double quick because you are doing double the flights with half the staff of even a few years ago.
But the one worrying thing is, staff turnover. Its not unusual to talk to a rampie who has 4 months experience and he or she is the most experianced person on the crew.