The difference is that a recommendation of protocols is just that, a scholarly abstraction.
In this case, a flesh and blood human being was purposely deprived of water until she died, and the state did nothing.
The Vatican is re-asserting a continuous, consistent policy of protection of innocent life.
But IIRC the author said that he had already done it several times.
State detained 47 Americans who wanted to give water to Terri.