I'd answer the OP's question by saying yes, adventure bikes are heading in 2 different directions but only from a marketing/manufacturers perspective.
Adventure riders themselves are heading in all directions as they have always done which is at the heart of the dilemma. From a purely financial perspective it makes much more sense to narrow peoples choice so you can better focus your energies and profits -manufactures can't make bikes to suit everyone so what you see out and about are people making the most of what's available. For me that ended up being this:
Aint she Purdy