I feel Kishi not needed to do that and Im feel sorry for Neji, he has a potential to be Hyuuga image saving figure, there are many way Kishi can done to save Naruto and Hinata without sacrificing someone that is a primary characters of Naruto manga. Why not using some fodder, because he will be honoured more for saving MC, and I think it will inflict or left more sad and pay back feeling on Naruto. Or used some pull out moment for Naruto to save Hinata and himself like chakra arm or some random Hyuuga shooting a fist or palm attack on the mokuton needle, Kishi is asspull king afterall if he really want to save NaruHina future.
I already knew Kishi done this is for NaruHina even before Radon reveal. I already discuss this matter in one unrelated thread that title 'Itachi early scatch'.
It is about if Neji not protecting Hinata, Kishi will used other method to saved her for NaruHina plot, and I said if Hinata still having a future plot, Kishi will saved her if no,Kishi will kill her. That mean I already anticipated it before
But still I think Kishi should done batter, I know he want or tried to tell us NaruHina is the cannon. But as one member said here, Naruto and Hinata dont kill Neji, but that is Kishi decision,
And also about this quote"in every gain, there also sacrifice" . Yeah, I will just stayed neutral about this matter