From what I understand, the blogger says he agrees that scientific reductionism is false, or specifically that details abt microstates of a system (like say, states of quantum objects in countless atoms in a system) don't really have a say in the system's macrostates.

The blogger also argues against an experimentation (to prove reductionism false) introduced by the paper he is discussing in the article quite convincingly, I must say.

Here's a couple of extracts from the article that should clear the premise up for you:

"For here is the argument from the Entropy paper, for the existence of macroscopic causality that’s not reducible to causality in the underlying components." <the argument follows>

"...scientific reductionism is false. There is higher-level causation in our universe, and it’s 100% genuine, not just a verbal sleight-of-hand. In particular, there are causal forces that can only be understood in terms of human desires and goals, and not in terms of subatomic particles blindly bouncing around."