He does (appropriately, from his approach) go back to Kant:
"Kant (1787) in his Critique of Pure Reason disagreed with Locke’s claim that our conception of time can be bootstrapped from experience, and claimed to the contrary that time is not an aspect of objective reality but is an innate a priori concept that we impose upon our experience."
I think ultimately, when you dig down, Hoffman
takes the cognitivist approach of information-processing agents, vs. the material[pan]psychist approach where experience is intrinsic to matter (which could include temporal experience).
@pphilipthrift