I don't think it has anything to do with a hate for exposure. Rather, a keynote is live. A video is edited. A video can be designed to show exactly what you wan

I don't think it has anything to do with a hate for exposure. Rather, a keynote is live. A video is edited. A video can be designed to show exactly what you want to show, in the way that you want to show it. A stand-up presentation, albeit powerful in its own rights, just may be too raw for him. He doesn't want to do keynotes. But if exposure was the issue then he wouldn't be in all of those era-defining videos.