Earlier quoted context omitted.
"months" sounds reasonable actually. "decades" and I would definitely agree with you. The problem with this sort of discussion is that everyone thinks they are worth more than the market will pay, and that the market is somehow broken.
Read this article, then spend a few days making ice cream, and you'll have a pretty solid grasp on it. I promise, months is an exaggeration. http://sweets.seriouseats.com/2013/08/how-many-eggs-should-i...
I do agree with your overall point that chef's skills probably aren't specialized or difficult enough to command high wages in the long term.