To my understanding this isn't true. Title IX is about fair play between gender and sports. Everything that applies to one SA has to applies to all SA's. Everything that I've heard or read doesn't say title IX makes paying scholarship athletes against the rules it makes paying only certain scholarship athletes against the rules. Since there's no way the school could afford to pay them all anything significant enough to matter they pay none.
Again if the NCAA removes all rules barring athletes from receiving outside benefits from 3rd parties it would be unilateral. Most importantly it wouldn't cost each individual schools a dime. When you break it down the argument that SA's then should have to choose between a scholarship or the ability to accept gift/money from a 3rd party is just way off base.