Do you limit Aikido just to a body art? I affirm the body art. I affirm all you say about it. I affirm Dan and his skills. I honor my teacher.
But what are you, as a teacher, offering Stephen who just had a stroke? He is in a wheel chair? So is Joe Arriola. How about a paraplegic. Can they study aikido? Is someone allowed to ask such a question under this thread or on this site?
Is your definition of Aikido reductionistic? I am asking this in sincerity.
My Sensei once accepted a student who was paralyzed and in a wheelchair, with only about 50% use of his arms. He was a great guy with a great attitude, and I know he appreciated and valued the chance to train what he could.