Evidence present is not evidence sufficient
The conflation
a claim with a citation attached is treated as substantiated, and a claim without one is treated as unsubstantiated. Both readings skip the question that matters.
The rule
Record two separate facts about every claim: whether any evidence was published alongside it, and — separately, and by a human — whether that evidence could carry it. Never let a system that answers the first pretend it has answered the second.
In practice
a page states a 99% accuracy figure and links to a blog post. Evidence is present. Whether a blog post can carry an accuracy figure is a judgement, and it is not the same question.
What applying it costs you
you cannot ship a single verdict. Two columns is a worse demo than one score, and one score is the thing that would be wrong.