Pretty sure NCAA drops the hammer harder when it comes to playing ineligible players. It’s why OSU football got in so much trouble for Tatgate, Michigan basketball for Ed Martin scandal, and SMU football the death penalty.
Admittedly I have not read about the MSU thing at all, but playing ineligible players is always going to bring down the most severe consequences from NCAA. That has mostly gone away because of NIL, now the players are allowed to be paid over the table and out in the open- so I have no clue how you get popped playing ineligible players unless it was some academic fraud where they are changing players grades or something.