What do we mean by hyperactive? A show like The New Treasure Hunt doesn't work without hyperactive contestants, but those contestants' hyperactivity was usually genuine.
In the banner year of The Price Is Right that was 1978, there were many hyperactive women contestants who went hysterical the moment their names were called but still could hold it together enough to place a One Bid in two seconds and smart enough to know 45 packages of Certs would win you the Grocery Game instantly. I like that kind of genuine hyperactivity. I don't want it in all Price contestants, but in some it can be entertaining. Now that they're handing out the soda pop and snacks before the tapings to get peoples' sugar levels up and encouraging them to be a wacky as can be, it's not genuine (or entertaining).
Coming on nearly 70 years after the quiz show scandals, I think we're circling back to the same problem: Producers want to engineer the excitement. Since the games cannot be fixed, they're trying to fix the contestants to produce a certain type of personality. If it doesn't show in the first take, then do all the pick-ups you want; and this is problematic. I would argue a significant element in what makes a game show great is the same way watching any competition can be engaging: the human element. If it's fake, then it's not enjoyable.
I'm sure there are several here who will quickly point out that, fake excitement or not, the product is selling and the people continue to consume it. I'm not about to say that's a good thing.