If you watched his cookery program last night, did you see how they were presented to him? A big pile of each spice, all next to each other, on some kind of Turkish-looking serving plate. He took a pinch from each one, to add to his dish. Thereby mingling them all together. Thereby rendering them useless (as all mixed up) and would have to be thrown away.
In the old days, someone like Deliah Smith would have had them premeasured out into separate little cups. I admit I don't usually watch cookery programs so is Yotam's method the in-thing these days? If so, I dread to think how much spice is being wasted on a national scale.