However, you're right to say that consensus doesn't govern, supermajority does. Who represents the supermajority opinion in the transaction scaling debate? It's not the BIP101/XT contingent, is it? Are you really going to try to pretend that even 51% of Bitcoiners support your views? You're in the fringe, and will remain there.
I think it's even stricter than that. If dev and mining majorities both have a supermajority against something, it's definitely not going to happen whatever the rest of the Bitcoin space thinks about it.
Agreeing against something is considerably easier than agreeing to a concrete proposal.
also, the majority of nodes have/will reject such increase because it will simply drive their cost up..
and since they are the ones propagating the blocks, it is likely nothing will come up as to such matter if they would not get retribution of some sort in the first place.
so i dunno which planet these forkers live on.. with their conflated inabilities and authoritarian adorations.
if only they could really fork off tho.