Charliehall,
I don’t think that anyone is disputing the need to believe in “Scientific facts” they are as you said, simple facts.
The question is about Theories which may be promoted as “facts” yet aren’t.
Saying scientific “age counting” is fact based is simply ignorant, as one poster noted, there are different methods all of which give different results so it’s hard to take it as fact based.
The question remains why believe in Science.