No, the point is you perceive them as slower because when you rush you can feel it things feel snappy, you can emotionally feel your speed further and it is unfortunately socially acceptable for you to openly shit on retail workers as lazy, stupid and incompetent in a classist insult.

This is the same phenomena as when older conservative men who have gotten used to being in control of everything cannot actually physically restrain themselves from micromanaging whatever they see people doing infront of them because they can't handle their irrational experience of impatience not having the companion emotional experience of rushing at the task.