You seem to worship your own understanding as infallible. Did you not read in the other conversation, or did you read and just not comprehend, about the Hebrew word that is translated ‘day’?
The Bible actually does not deny the antiquity of the universe.
The word traditionally translated ‘day’ in Genesis 1 is a word for an indeterminate period of time, that period determined solely by context. The context in Genesis 1 is unique in all of scripture, the very creation of the universe, space and time itself, and it happened ONCE. A plea to a meaning in another later context is illegitimate.