I think you won't gain anything from conflating "detectable change" and "awareness". We kind of already had this discussion in Quantum mechanics with "observations" and the "consciousness" of an observer. Nowadays the information theoretic point of view is prevalent among physicists and an observation is often seen as just a correlation between the observer system and the measured quantum system. No consciousness needed.

Nevertheless I agree, that it is interesting to think about time as an series of changes or events instead of just as a dimension of 4D spacetime. I didn't watch the video yet (I prefer text), though, so I refrain from bothering you with may opinion on this topic.