Time isn't movement but the measurement between 2 points by an observer. You can believe god is whatever you want I'm not trying to change that. I feel some of the qualities god would have are timelessness and unchanging from the beginning to the end. So for me making such a bold claim that god is time is the equivalent of the simulation theorists claiming light speed is the proof of their theory. The reason they say this is they think light speed is the artifact of the program. The problem with that is an artifact doesn't change it stays the same throughout all functions of the program it's your baseline or limiting factor. The speed of light and its behavior is not constant throughout everything. Sometimes it's observed as a wave others a particle its speed changes through different mediums so it can't be their artifact because it's not unchanging throughout everything. Now as far as god being time I feel god would be constant throughout like the artifact your limiting factor in the program. But it is testable and proven time depends on the perception of the observer. Its percieved to flow at different rates under different circumstances for observers. Which means it doesn't remain universally constant throughout everythin from the beginning to the end.