The big bang is a theory. It makes predictions that have so far been found to be consistent with all observations. It is not whatever "God haters" say it is. It is a very specific theory about the expansion of space-time. It is not and never was an explosion. Yes, theories can be modified, but that is the result of new evidence. You are also correct that God will never be considered as a possibility in the big bang (or any other scientific theory) because the hypothesis that God exists or that God did anything is unfalsifiable. Your lack of understanding of the big bang theory or science in general is irrelevant.
Exhibit 'A': It [Big Bang] is a very specific theory about the expansion of space-time.
Exhibit 'B': Yes, theories can be modified, but that is the result of new evidence.
IOW, we are back to the original assertion that believers in the religion of Evolution only have to believe one thing: Absolutely No Intelligent Design, anything else goes.