It is narrow minded to consider changes in medicine that are positive in this regard as somehow brought about by Jehovahs Witnesses. They are brought about by good science and the practice of medicine as a "do no harm" culture. The desire of JW's to refuse blood many times to their own peril in emergency situations, is very different that a desire to perhaps be willing to increase risk during surgery by not making it available as a tool.
The flat fact is JW's still die from this. Doctors try to keep people from dying. So while respecting peoples wishes in non emergency matters in particular, they also find out that perhaps the industry has not evolved away from this system as much as it could have. The reality is that as science and progression makes blood less and less necessary, or focuses more on fraction compounds and specialty treatment, that JW's take a victory lap.
they shouldn't. They are missing the point of their own doctrine.