I think some of you are being a little unfair to Jamie Oliver.
He realised years ago now, that a certain part of our society (dare I risk saying in the two generations younger than ours?) / were living almost entirely on take-away and / or biscuits, crips, chocolate bars and fizzy drinks bought in the nearest supermarket or corner shop, and had no idea how to cook.
I clearly remember watching a programme in, I think, 2011 or 12 where a young mother not only handed her toddler a packet of crisps or bicuits whenever he was hungry, but admitted that she had literally no idea how to turn on her electric cooker.
So addressing these people, it makes good sense to tell them that they can save fuel by putting lids on pans! And telling them that you can actually make good, nourishing food at home for little money.
He doubtless knows as well as we that countless auld wives know how to make good food cheaply, but when did a young mother last ask your advice?
Never, would be my bet, but they might just watch his programmes.