The problem with this is that the universe looked the same 6000 years ago as it does now. The planets were there, the stars were there just like now. There are old records. China has records going back 5000 years. The Pharoahs based a lot of their cosmology 4000 and 5000 years ago on the appearance of the heavens, and their constellations still look the same as our constellations.
FWIW, I agree in my "take" that the solar system and stars look the same today as they did 6000 years ago. The sentence after the one you quoted says I see both statements are true and compatible due to the effect the expansion of the universe has on the perception of time depending on the observer’s point of view.
The next three paragraphs and links explain why I came to that conclusion - and the remaining narrative goes into more detail.