You do realise that families go in supermarkets, and that kids go in them as well, hundreds of different ones, from hundreds of different households, everdyay
Like you've been told before, unless they are sitting down in groups of 30 per aisle of the supermarket without their masks, within 2m of you, for fifteen minutes, the environment is not the same. The world and his wife can see this. But no doubt somebody will be along soon to say that that's exactly what happens in their supermarket, etc