I think this is an example of fans overplaying the 'mentor' role. It's not the same as a coach and probably not even necessary. What does a 'mentor' do? How much time does he 'mentor' Allen. I think it's mostly BS, if he offers some helpful advice, great, but a coach should have greater responsibility and ability.
and he may not be a good one either. Being an experienced NFL player doesn't make you a good coach.