You can’t because most of the “rigorous definitions “ aren’t shared.
You still haven’t explained what “factually consistent” means in a method that’s repeated and able to be applied regularly.
Their methodology as posted is far too vague to adequately consider their ability to provide consistent neutral ratings.
How are “loaded” words evaluated? Is there a table of words that are considered “loaded”? Personal feeling? We don’t know. We know what some of them are, since they’re mentioned on specific articles.
But that isn’t a consistent or “rigorously defined” criteria. So what is the “rigorously defined criteria”- and why is that not published?