The only reason to make this young Earth, WWFlood argument is you think your eternal soul is at stake.
It’s irrelevant to my faith. And beyond that the subject is a relatively irrelevant curiosity to me.
The “truth” of the matter isn’t going to change my destiny on Earth or Eternity.
It doesn’t affect your soul or mine, but the old Earth lie was invented by the inventor of the original lie to drive a wedge between men and Christ.