KE would be a determining factor if a person wanted to lower their DW but still shoot a heavy arrow to achieve good momentum. I don't necessarily disagree that the idea of KE has been corrupted by bow manufacturers but if KE is used in conjunction with DW and momentum to determine a quality arrow then it is very much a part of bowhunting and of valid use in a discussion.

I think what gets lost in these types of threads is how everything works together. People talk about a BH as if it is not attached to an arrow or they talk about bow speed but do not relate it to arrow weight or they talk about arrow weight (lighter is better ) but do not relate it to momentum.

If more bowhunters understood how their bow and their arrows worked, and worked together, threads like this would be rare. Unfortunately most bowhunters think they need the fastest bow they can afford to shoot the lightest arrow it can for the flattest trajectory with a BH that is like throwing an axe through an animal. Recipe for a nightmare of wounded animals.