Young earth...
So all our efforts to measure the age of things could be incorrect as well? Maybe the earth is only 6000 years old after all.
Which is co-incidentally where I first heard this suggestion:-
https://answersingenesis.org/astronomy/starlight/does-distant-starlight-prove-the-universe-is-old/
Perhaps it's worth checking these chap's agenda before putting too much effort into this?