The problem with CBOR is that once people relate it to IPFS their will be massive push-back, because IPFS is seen as too complex. I know this is true because I saw it happen. To these kids even XML is deemed "too complex", thus their love affair with JSON instead.

The reason Social Media protocols need to be kept simple is precisely for this reason. Getting developers to all agree on things is next to impossible. So the way to combat that is by removing all those "things", and go with the simplest design that's workable. It's almost like politics in that it's "The Art of the Possible". And to be "possible" in this context means universal acceptance.