I think you should reframe this...and ask if anyone can link evidence of a case of type 2 diabeties or non alcoholic fatty liver disease where the patient didn’t consume sugar/carbs (those cases don’t exist).
I think historically type 2 diabeties being called adult onset diabeties shows that even life long moderate consumption of carbs/sugars leads to type 2 in many individuals who were “healthy” in their younger years. Moreover, for many people type 2 was just a natural progression, it’s not like historically everyone with type 2 began over consuming carbs/sugar later in life.