I watched and it seems that it's more related to entropy. It seems that he's approaching it from a high level, seeing how it correlates with macro characteristics, then eventually finding how it emerges from micro things.
I like just that he's suspending belief in gravity as a fundamental force and approaching it from what we observe and know, treating it as something emergent, the same way other high-level characteristics don't involve any special fundamental physics. This is the heart of science, coming up with fresh ideas and working hard to make them testable, and testing them. Good science tries to shake the foundations, rather than merely confirm them (which experiment can never fully do, as it's only capable of proving some theory false, not true).
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