Well I remember going from cedar arrows to aluminum and I thought "This ain't being traditional...
I quit worrying about what's "traditional" a long time ago. I use what works best for me, just like everyone else did before me. If "traditional" means using the original equipment, I don't know of anyone that does it. That would be wood bows backed with natural materials (rawhide, sinew, hair, etc--if they were backed at all), natural strings (plant fiber, sinew, hide, etc.), natural shafting (cane, rose, etc.), natural points (bone, flint, etc.)--the list goes on. Since I shoot a "modern" longbow made with high-tech machinery, utilizing fiberglass and phenolic in the build, and sporting a string made from some of the most modern man-made fibers on the planet, I don't think wood arrows make me traditional in the strict sense of the word (although I do shoot wood, due to tournament rules).
As for the rest, I agree for the most part. Cutting the arrows short makes them act a lot stiffer, and the Easton chart is generally way off base for trad bows.
Chad