To be politically correct as the USN touts the "whole person concept", that kind of works for some designators, often smaller ones but they most still pick those with high GPA's. The technical ones (Nuke/CEC/CWE/Aviation) have to go with what will get them through the program or training pipeline.
Kind of, the number of people selected for aviation with no LOR's and minimal statements over the years is staggering. I have seen applicants who technically should have been selected on the "whole person concept" as they had high GPA, athletes, leadership experience, and volunteer experience but their scores were 5 or 6 so they were not. I have seen applicants who did literally nothing in college except go to school who had high PFAR's get selected and have don't quite well so well that I can't think of being told of one who didn't make it to the fleet as an pilot.
I don't know how accurate this is but I was told that 20 or so years ago that board selections were made by pilots and nfo's, and they focused not on the ASTB, and that the drop rate in the pipeline was not acceptable to NRC was given control of selections for aviation and several other designators. If the aviation board members follow what NRC fixed things should be fine, however when selections were given back to SWO, Supply, and IWC they have still managed to screw it up over the years.