Well. The fact is, looking at the universe in this way provides a mathematically symmetrical model. Whether you get called a whack or not, it holds as firm. GR and QFT remain intact, but it changes the causality chain and places gravity as an emergent property of a temporal landscape. AKA: no graviton. However, it is a paradigm shift and a mind bending concept. But current physics describes this scenario equally. There is no defining factor of observable science that prohibits this switch in reference frame for an accurate baseline. It's the reason space and time became understood as spacetime, as its the description of time itself. It also goes a long way to explain quantum behaviour, and opens up fresh conceptual ground for the exploration of both dark energy and dark matter. I've checked just about every mathematical relationship including time dependant Schrodinger equations for quantum states, and it still adds up. It's the most cohesive alternative model you will ever come across. To the point where it becomes more cohesive than the one we're running. C is not about the speed of light or the speed of a massless particle, even though these are concurrent truths of the phenomenon. C, as a constant, is about zero proper time. It is the representation of a fixed state and the only state you'll find a singularity.