Is there any wonder why even to the most Orthodox Jews today they've never subsided with this particular view of blood transfusions
or any other Christain based religious organization.
Personally I think people within the organization realized over time they or someone in the past made a theological mistake
in interpreting what was written in the bible, but since it had been so strongly supported by the organization for many years
and people did in fact die from refusing a BT, they are now compelled to keep the doctrine as is.
As religious organizations go sometimes they get closer to the Truth and sometimes they just simply drop the ball,
they dropped it concerning BTs, as well vaccinations and organ transplants, all with devastating consequences upon the followers.
They also dropped the ball concerning celebrating birthdays, but thats another story.