" ... seemingly you have no idea what physical phenomenon might be compactly symbolized by a number in a physics mathematical equation."
E = mc^2
"Numbers are a common everyday thing. If a view of reality is not able to explain numbers, then perhaps it is too superficial, or just plain wrong."
You have a quite innocent view of mathematics, of which 'number' is but a semantic element. What do you mean by number? Counting numbers? Rational numbers? Transcendental numbers? Complex numbers? R, C, O, H?
"Re your belief that reality is 100% deterministic: even Joy Christian wouldn't claim he had evidence that the time and space parameters for every individual particle outcome are predictable beforehand."
He does, however, have the measurement framework for a theory with potential to explain all quantum correlations. Do you understand what that means?