Is IPFAS the Minimum Requirement for Air Quotes?

The IPFAS specification doesn't actually have an opinion about this. This is kind of like a layer above. The minimum viable IPFAS is using CIDs, content identifiers that are based on the contents of the data. If you're addressing data in that way, you get to choose how much of the underlying infrastructure you want to implement and how. That has its trade-offs and challenges too, but it ensures that the application itself doesn't have that location-based complexity built into it.