To give power to the state to decide who is unstable and who is not would be doing what youre advocating. That choice will not ever be a voted for person (as if that would actually matter anymore lol), it will be someone appointed by the same type of people that have stripped gender dysphoria from the dsm. By the standards you are advocating, by todays mental fitness standards, a pepe memeing patriot is mentally unfit and a trans person who just cut their dick off and is on mind altering hormone therapy is considered mentally fit