There is nothing wrong with what he said. He did not push for euthanasia.
His position is to treat what can be treated and to leave, what would not lengthen the patient’s life, alone. However, through the whole process to the end, keep the patient comfortable and not in pain.
That’s how I understand his comments.
She was starved to death. The explanation was starvation brings Euphoria.
Except she wasn’t treated. Her husband withheld therapy for her. Furthermore, starving a person to death is always unacceptable. Good and water are not heroic medical treatments.
Except that Teri Shaivo did not have a terminal illness and was not dying, so his comments were not relevant to her being starved to death.