If that's true, then Stallman has completely failed as a leader. There are 7 billion people in the world; if after 40 years there is nobody of similar caliber at the FSF, it is because he has either not attracted them, not trained them, or has driven them away. (Perhaps by asking them on a date or handing them a card that said "tender embraces" the very first time he met them.)
I sincerely hope that there will be people in the FSF that can make it more robust, and set it up for long-term success.