It was a different time, some selection rates were at 75% in the past. Several years ago we looked at quite a bit of data and 9's and 8's were a near lock for selection, 7's were 50/50, 6's were occasional and 5's were rare. There will be those with high scores that don't get selected but often there are other issues at play such as non-medical waivers.
Those that have flight training tend to do better on the ASTB as they have a better understanding of some of the questions, that can give the false impression that those with flight experience have a better chance of selection when really the flight experience led to better scores which led to the selection.
I have seen several who had multi engine ratings, CFI, etc.... who were turned down with 6's and 7's, while I have seen A LOT who had 8's and 9's who had never flown a plane before that were picked up.
What I would recommend is that anyone wanting to go SNA who has less than an 8 for PFAR keeping studying in case you don't get picked up and need to retake, I have given the same advice before the current situation, this is what I would tell my applicants and each one that eventually had an 8 or 9 was picked up.