I recently had an argument with a stranger on the Internet, and was surprised the answer was not here already.
I do not believe he was, for a few reasons:
- Leia did not deliver her request as anything other than a long shot
- Most of the Alliance thought he was dead
- Even when helping the Alliance in A New Hope, he was really just protecting, helping, and training Luke
- When we see him in current canon, he is not interested in helping the Alliance, and is merely giving friendly advice to his visitor
However, the question is simple:
Based on Disney canon, was Old Ben Kenobi considered a member of the Rebel Alliance?