"Old folkies moan about everything?"

Not necessarily, Megan. I can name you at least four cheerful and pleasant old folkies.

I bet that if you did research, you would find that the people who complain about everything * started out life as fussy babies.

They went on to become whiny kids, sulky adolescents, dour middle-aged people and now, crabby oldsters.
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* everything: for example, complaining about the design of somebody's music stand, for pete's sake. Here's a person who has completely forgotten to be interested in the music to come.