TR: There are Rishonim who say that even the Mabul was a Mashal and that nothing in Chumash before the story of Avraham Avinu is meant to be taken literally.
Sisrei Torah are Sisrei Torah for a reason. It is not for us to discuss or debate. Everyone talking here about this minute point of 6000 years vs 6000+ years is silly. It is like my 5-year-old cousins debating which of their Pokemon cards is better when neither can actually play the game (then again, neither can I.) It’s just silly. There is evidence that the world is 6000+ years old (current scientific evidence). There is evidence that it is less than 6000 years old (Pashut P’shat in Chumash). Why can’t everyone just agree that these bits of evidence exist and we have no idea what really happened. HKBH created the world. That’s all we need to know. Anything more detailed than that in far beyond our comprehension anyway.
And by the way, I think the people stating that the world is x years old and then debating the potential scientific evidence are over on Mah Lifnim as well. G-d created the world. He did it however He did it. We are not meant to discover how that was.