Leibowitz’s Faith

Hello Rabbi,
If anyone has asked about this matter here about Leibowitz, and the rabbi has already answered, then I apologize in advance.
If I understand correctly, the Torah is binding on its part, not because of the facts it contains or the stories, which are not important, but because the Torah strives for faith in God and observance of the commandments. So, for the sake of illustration, if we assume that aliens photograph the Earth for 4,000 years and send us a copy, and then we discover that the standing of Mount Sinai did not physically occur, does it matter, since faith in God stands on its own, and observance of the commandments is a result of faith, regardless of historical accuracy?
I will reveal my heart, which is how I sometimes feel myself, so that I may be treating my own thoughts to Leibowitz.