Guy' s, I think that the weight issue is strickly in the minds of traditional archers. Easton carbons were developed on the NAA/FITA fields to improve long range performance. I still have a ten pack of the first carbons available from Easton for public sale (they came in 10 pack tubes with points and a lead ball weighting system for nibb balance)
Listening to trad archers talking about weighting carbons to 500-700gr plus projectiles in reality was not the carbon arrows design intent. Their light weight and extremely quick recovery rate were their strongest selling points to the FITA archers. FITA archers have shot 5gr per pound carbons for years with little problems with limb breakage. These archers shoot thousands and thousands of arrows per year so tackle failure would be far easily recognized in that format rather that the average trad archer who may shoot a couple dozen shots a day throughout a year.
Trad archers are locked into
traditions and have the 540gr AMO ( a standard developed to compare products to like products) mindset or a minimum 10gr per pound thought process. I am not suggesting all trad archer fire 5gr per pound arrows (hopefully no one out there feels the need for 90 meter accuracy for hunting

)but going up to 15gr per pound is also unnecessary and self defeating to the design intent of carbon technology.
I shoot all three (wood,aluminum,and carbon) each have their advantages and disadvantages. The archer has to define his needs and wants and shoot which ever fills his criteria the best.