Thanks, those are interesting links. Still, nothing there that seems especially compelling.

Maxwell's demon assumes the energy cost for sorting the molecules is less than the net gain. That looks like another variant of the perpetual motion machine.

The fluctuation theorem says the 2nd law doesn't hold for very, very small entities, but its probability of being correct climbs exponentially as the system scales. So, it is fallacious to then say the 2nd law may not hold at the macro level due to it not holding at the micro level, since the theorem used to support this idea is itself an instance of the idea being false.