A large ( in my eyes) problem with those rules is that they make a large assumption. They equate draw weight to the effectiveness of a projectile in causing a lethal wound. There is a whole lot involved and the parameters change.
Weight is always used to equate adequacy, although some 40# bows might be as fast as a 60# bow. Certainly arrow weight, correct spine, broadhead efficiency and sharpness all play a part as well.
The big problem is coming up with a fair and equitable ( and, most of all, knowledgeable) description of necessary adequacy.
That will take a bit to overcome.
ChuckC