"FSF board members are not compensated for their board service, and are not permitted to receive any personal financial benefit from FSF funds or other assets."

https://www.fsf.org/about/the-role-of-the-fsfs-board-of-dire...

It is completely reasonable for a member of a board of directors (or advisors or trustees) of a non-profit to resign if they think the non-profit is going in the wrong direction.