"people who have excelled in academic theater may be better suited to teach than perform--and I found this personal discovery delightful and unexpected."
I agree with finding it delightful, but I think it's a little more complicated than that. His character was, after all, on a TV series that is still in syndication, so he did have success as a performer. It's just that, for whatever reason, that didn't turn into a career, and so he is finding another outlet for his skills and passion. This job also gives him a space to exercise his activism and build a community, which are important to him, as they are a large part of what drove this whole troupe to go down there in the first place.