I think the point was more about whether causality should be thought of as a fundamental part of the rules, like this, or whether it's more useful to think of causality as an abstraction that (ahem, excuse the term) "emerges" from the fundamentals when we try to identify patterns in said fundamentals.

Somewhat akin to how "meaning" exists in a computer program despite none of the bits fundamentally meaning anything, I think. My thoughts are becoming more and more confused as I type, though, which makes me wish I had an environment suitable to better concentration.