Perhaps part of a long established trend towards continuum, ambiguity. Where there’s less space between the wheel and the axle, so people become reactionary and seek boundaries to grease things up a bit. We naturally quantify these new boundaries in the language of categorisation.
But the move towards larger boundaries, nationalism, appears more nostalgic than practical. Void of the passionate identification it once had. The macro-sphere of meaning has broke down into private semiology's as encouraged by personal media. Nationalism is a weak unifying myth.
Regardless, a pulling down of a wall of categories would also be a hefty psychological leap. So gradually greater categorisation and distinction, introducing us to greater complexity, decreasing the potency of abstract categorisation due to increasingly absurd micro-division.