I think it might have been better if he'd instead shown people that they only need to spend around 15-30 minutes making/preparing proper meals, actual time spent in the kitchen.
The way he does it, you certainly need 10 minutes beforehand getting everything ready, and more than that to clear up after.
He makes it all look so frantic - but I often spend only around 15-20 mins getting a meal ready, without any rush.
It doesn't mean we eat within 15 mins of me going into the kitchen, although half an hour is very do-able.
Yesterday's pasta dish took me about 10 minutes prep, then the sauce was left to cook; a minute or two to drain the pasta, later a minute or two to mix into the sauce and put in the dish. Made the topping, another 2 mins, into the oven and left for 30 mins. And the washing-up from the prep was all out of the way long before we ate