Here is a piece by the guy who wrote the classic episode of Happy Days. I think he doth protest too much. While Happy Days did still perform well for quite a while, that season did mark the turning point from top 3 show to something less than that. And, of course, the effect of that show may be exaggerated, but the phrase itself is what sticks, which probably does speak to the stupidity of the stunt.
I just hope this blog has not yet jumped the shark.