I'm sorry, but that's not the law. The guardian is supposed to make the same decision the incompetent would make if they were able to make it.
Anyway, what is your solution?
The guardian DOES have certain responsibilities under the law, and there is enough evidence that Michael did NOT carry out his legal responsibilities as her guardian that he should have been removed. It is incredibly barbaric to ASSUME that the AUTOMATIC choice any disabled person would make is to die. All that crap about this being what Terri would want if she could speak is just sugar-coating for the fact that this case is about setting a precedent that there is a certain level of ability below which a person has no legal standing as a person, and thus has no rights.
Anyway, what is your solution?
My solution is so simple, and the only one that makes moral sense. Let Terri's parents take care of her, as they have wanted all along. Grant Michael a divorce.
You want to know why I hate the legal system? It is because of things like this, where lawyers and judges do whatever they want, regardless of the morality, and then twist and interpret laws to support whatever immoral things they are doing. While they are playing around with making the law mean whatever they want it to mean, they completely forget the reason we have law to begin with--to protect our rights, to protect us from those who would do us harm, and to dispense justice to those who have harmed us.