Duly noted, good points.

However, the main dillemma I'm trying to highlight is the lowest denomination ie- unit is a satoshi and therefore the pie is measured in that unit. Since even this lowest unit can still represent any arbitrary amount of value you have basically an unlimited supply of units.

The premise of this argument is thus Bitcoin's fixed/finite supply is irrelevant when there are multiple trillions available of the base unit. Like saying we have a cap but that cap is equivalent to the number of grains of sand in the world.