Agreed. Anybody in one of those is just skeet.
I watched an episode of Running Wild with Bear Grylls (his guest was Keegan-Michael Key) in which he piloted one of these jet packs.
He seemed very good at it, so he must have had a lot of practice.
The Gravity Industries' Jet Suit is a 1,050 horsepower system which relies on five jet engines, and costs about $440,000.