By preferentially doing business with merchants who accept bitcoin, you are indirectly incentivizing development of supply chains based in bitcoin. That's because those merchants now have more bitcoin and will be better able to pay a supplier in bitcoin, and those suppliers now have more bitcoin to pay their suppliers with, and so on.
The supply chain builds out organically and it pretty much has to do so. Centrally planning a supply chain in a modern economy is not going to get you very far.
"Meaningless" is too strong a term.
By preferentially doing business with merchants who accept bitcoin, you are indirectly incentivizing development of supply chains based in bitcoin. That's because those merchants now have more bitcoin and will be better able to pay a supplier in bitcoin, and those suppliers now have more bitcoin to pay their suppliers with, and so on.
The supply chain builds out organically and it pretty much has to do so. Centrally planning a supply chain in a modern economy is not going to get you very far.