In 1978, I went to a friend down the street to borrow some Yes albums because I was going to see them in a few months. He said to me, "so you're getting into the Prog rockers now, huh?" So the term "Prog" was definitely around in the late 1970s, though perhaps not used everywhere (this was in Western Massachusetts). Either that, or this dude invented the term at that very moment in time, and the rest is history!
I watched the clip. I didn't think it was that funny, but maybe you need to get into the show more to get it. The name doesn't really sound like a "Prog" name to me either.
Bill
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