One aspect where they would add to the technology of a bowhunter is with people who have continued to use large diameter aluminum arrows with large fletching so they can see their point of impact. I know such people and if lighted nocks are legalized and if they do what they say they will some people will be shooting faster/flatter shooting arrows. If somebody says they "do nothing other than help me find my arrow after the shot" they are in denial to some extent.
If a study came out that proved that lighted nocks increase game recovery with zero increase in technology I think everybody would jump on board but the reality is that wont happen because they are just cool curio. Kind of fun to watch on TV but problaby not worth going against the tradition of the P&Y Clubs "Rules Of Fair Chase" to me.