We're not talking about the "real world." We're talking about a theoretical world in which you yourself have concluded that chrstianity is false.
In that world the historicity and authenticity of the Revelation at Sinai would still be valid, because it is not a product of chrstianity but existed prior to and exists independently of any chrstian dogma.
I don't want to debate the "real" you. I want to debate the "theoretical" you that has rejected chrstianity and is tempted to become an atheist or agnostic, so that this theoretical you will choose Noachism over atheism. Do you understand this?
But of course, if you're afraid to deal with it that context, by all means feel free to continue to give me the "no thanks, I'm a chrstian" line.
Keep attributing my silence to whatever you like, if it makes it easier for you to live with rejecting Christ. But once you've know Him, he'll chase you till you draw your dying breath, no matter what you post here. You know that in your heart, just accept it and move on.