I don't see why it's bonkers. The stamp represents a contract issued by an authority that gets its legitimacy from a vast population. All the issuance and transfer of this coin does is grant permission to distribute resources to various groups and as a society we've agreed that said permission is needed to lend legitimacy to our currency.

In principle it doesn't need to be transported by helicopter or transported at all, that's a formality that predates the Internet. It's not a particularly big detail that is worth changing, much like it's not a particularly big detail that a President must be sworn in by having a judge physically stand next to him and have him exhale CO2 in such a manner so as to produce vibrations within a narrow audible range.

Both things are just formalities to express intention.