Exactly - The Flesch Kincaid gives you ranges, and it's reasonable for amendments to be within a certain range. For example, in Florida, all life insurance policies must have a Flesch Kincaid score of at least 45. This still scores as "Difficult to Fairly Difficult." It'd be interesting to see what the readability scores are for different amendments.

> "The text achieves a minimum score of 45 on the Flesch reading ease test as computed in subsection (5) or an equivalent score on any other test comparable in result and approved by the office;"

https://www.flsenate.gov/laws/statutes/2011/627.4145