They may be telling falsehoods, but in most cases I don't think it's intentional. They're so deluded that they honestly think a teaspoon sized pinch is a "pinch". Their fingers are the size of sausages and their eyes are the size of saucer plates. Of course a measurement like that is gonna be off. And even if they use a spoon, they consider a heaping ass spoonful to be a regular "teaspoon"