Yes. Though so does Keith in that picture.
I think it was inevitable that Jagger would become the spokesman--to this day, people look to the singer to speak for the band, on stage it's usually the singer who talks to the audience, etc. Brian didn't occupy a position in the public's perception of the band that would have made him an obvious spokesman, really. Equally, once they started making records and appearing on TV, etc., if you didn't know who the band's leader was, you probably wouldn't guess Brian. I was a humongous fan, and I didn't realize that particular dynamic for a long time.
Sorry, just musing. Here's a couple I really like--