They will only get upgrades to F if they use eVIPs themselves. The free upgrades do not apply domestically on 3-cabin service from J to F. They only ever apply from Y to the next cabin up.
Those F seats will go out with non-revs or empty. Your only option option is to hope for over sales requiring cabin roles. But I really haven't seen a lot of those in the past couple years. The AA RM team is really good. YMMV