Not really, depends on the age of the children, by age 5 they are likely to become very good a the games. Speaking from experience, my young children play Wii Sports games.
You could argue that no gaming at all is the best option. Maybe, that's a separate discussion. Given the choice between "classic" gaming and motion controllers, the Wii model wins by a huge margin. It cannot compare, the parent comment describes the benefits really well.
There is something to your point about post-game hyperactivity, but that can be dampened with some parental intervention. The same behavior can be observed after sugary drinks, vigorous play...