I think your are mixing concepts here. Entropy grows at universe level, as far as we know to date, and, eventually, unless we discover something else, it seems that it will end up as simple radiation in a cold, dark nothingness.

Now, that is different from the entropy of human society and has little to do with the bitcoin consensus mechanics. Order a chaos are historically the way humans advance - I dare say progress. As the number of living people increase, there is a permanent increase in entropy, but at the same time there is a permanent increase in units that deliver work. The cohesion, organisation, management and governance of societies decides which factor weights more.