You are trying to argue that cutting up 21 pizzas into infinitely small pieces is the same as an infinite number of pizzas.
Discussion
I see what your saying... same amount of energy expended per bitcoin but divided as much as one wants doesn't make more bitcoin or dilute the value.. and doesn't make more SATs it would make fractions of SATs as they are now currently defined as 0.00000001 of a BTC
I think that the important monetary impact is that in bitcoin how ever much you have is always a fixed fraction of the total. In fiat your holding is generally becoming a smaller fraction of the whole.