This is an expression for which I can imagine a multitude of specific meanings, can you clarify? I don't know of anybody who is actually using control over scarcity as a proxy for consent (consent of whom?)
Physics still puts bounds on production, and what we can have. Land is the perfect example.
Gold was only ever used as an accounting mechanism, and fiat money is definitely an improvement but accounting must still happen. We were never richer or poorer because of the amount of gold we had in our possession, it was merely used as a token of how much of others' labor we could have. As many current things that are scarce become less scarce, we'll still keep accounting for them. And as new things become scarcer, accounting will be just as necessary, by US dollar or by crypto or by handmade pieces of art that AI can't produce, or whatever.
Georgism's failures have been through landowners getting control of the taxation mechanism and taking the money back that belongs to the rest of society. Literally any other social change is going to have to confront that same question of power and allocation of resources too, it's nothing specific to Georgism.