It is, quite simply, the expected cocky and overbearing American version of almost anything that is done more properly and sedately by the Brits - at least when it comes to current cooking shows IMO. I think the one cooking show that translated pretty well into an American format is/was The Great American Baking Show.
The home cooks are all characters to fit into a certain parameter that has been pre-determined by the producers. There’s always the cocksure cook who is certain that s/he is better than anyone else; there’s always the Midwestern farm wife who cooks plainly, there’s always the very unsure-of-themselves cook who does better than they think they are able, there’s always the cook who has pulled themselves up by their bootstraps to get themselves out of a bad life, blah, blah, blah. Its saving grace is it’s not GR’s Hell’s Kitchen. The American version is absolutely vile.
However, as for the last sentence from your market’s lifestyle article, “What exactly are grits, does anyone know?” Well, this show can at least tell those in the U.K. what they are. Cooking shows from other countries introduces us all to different foods - that’s not a bad thing, is it?