The hack also has other changes made, for example finding pokemon to battle and catch and difficulty in general. Is slight more than a mature offensive rom hack, is aimed to be a complete replacement rom hack in terms of a "mature" experience.IMO if ppl want a censored version then just play the original Pokemon Sun. why make a "censored" version of a "mature" mod. that's just too stupid.
But you are right, a censor hack is unnecessary, still is up to the op to consider if they wish tot have it hosted on more sites at the cost of slight editing, the troubles of game publishing i guess.