I am telling you that spacetime, seen as 4 dimensional block, does not change, if we take relativity at face value.
It cannot possibly change because there is no external reference frame that can be used to make sense of change, or dynamics, by definition. Ask yourself the question: at what rate does time flow?
Because of that, all your arguments invoking an eternity of time are moot. They assume an absolute ontology of time that transcends the existence of the physical Universe. That is what Newton thought, and he was wrong, if Einstein is right.
Spacetime is what the Universe is made of and therefore it is meaningless to speak of a time beyond its existence, or to use tensed verbes to discuss about its origins. There are no origins of the Universe. The word origin itself requires also a time context in order to make sense, ergo a Universe already in place.
Therefore, I suggest to whomever still sticks to the views of Newton about an absolute time, to resynchronize their epistemological clocks to modern science. Pun intended
Ciao
- viole