Well, to be fair, the same problem afflicts many of the people who were camped outside the hospice, making life for the other patients (yes! other afflicted people! imagine that!) even more miserable. Clearly the campers were unable to form any cognitive thought, obsessed as they were with politicizing the hopeless grief of the Schindlers.
It's hard to fault the Schindlers. They did what good parents have to do when an awful tragedy befalls their child -- hope against all odds. (Although they held out far beyond sensible limits.) But Bill Frist, supposedly a licensed medical practitioner, also had attested to Terri Schiavo's supposed ability to respond to visual stimuli.
Of course, this is the same Frist who refused to repudiate the ridiculous notion that AIDS could be transmitted through tears and sweat. So he brings the same level of competence and integrity to the world of medicine as he does to the world of politics.
And of course Michael Schiavo must feel a certain level of vindication, after being publicly savaged and threatened by these cretins. Unfortunately, being cretins, they'll never admit they were just flat-out wrong.