Wanting to stay alive and keep your job is a "political move"?
It has nothing to do with 'wanting to stay alive' RBG will do that in or out of SCOTUS or not as she sees fit. Not retiring is a political move.
"I believe there are more instances of the abridgement of freedom of the people by gradual and silent encroachments by those in power than by violent and sudden usurpations." -- James Madison