The NCAA made the decision to toss them out based on the rules in place at the time.
Now the NCAA is considering changing the rules.
Those suspended or kicked out should still be so. Going forward, new rules mean new cosequences. Not retroactive changes.
The athletes are young adults and learning there are real world concerns for their activities is part of growing up.
While they play on the mats, fields and such many are getting shot, blown up and killed as part of their jobs. Young men and women in the military do the job, face strict rules all the time.