Oh boy here we go..... I am going to say it
A lot of the stuff you hear, are things which have become like the legend of Bigfoot. Tons of ink spilled on it, movies and stories by the truck load and even some photos. But nobody has drug one in alive or dead yet.
You can buy any one of the shafts from any of the major manufacturers in standard diameter and be fine. Until you are extremely accomplished, they will all out shoot you, no nock tuning required. You will damage one more than likely by completely missing the target then anything.
This and that brand being significantly better than another....not to me. Find the right spine, something that hits the total weight you want..... special components if you are looking for that....and go. Standard diameter arrows of .244 ID lot less things to consider. I honestly do not know where some of this stuff comes from. It makes me shake my head.
You buy arrows from someone with a return policy......you actually have some arrows that are defective in some way for real and its legitimate....you ask to return them and get your money back. I have NEVER had to do that .