If 100 members do not renew that doesn't move the needle considering all of the turnover there is yearly in membership.
If 100 MD's go Hit Factor and not USPSA for several months, that hurts. It is much harder to find new MD's than it is to find new members. If the MD's get fed up enough to either stop altogether or not run USPSA it will matter a lot.
Until now, only members were voicing their displeasure openly. USPSA is still a small sport with high turnover. Unless the local leaders do something then not much will change.