Sab,
Can you elaborate the point you are making? I seem to have missed it.
The comments you got on your video were typical inasmuch as the individual took one single facet of transfusion medicine (i.e. The administration of red cells in scheduled surgery) and attempted to claim that transfusion is never absolutely medically necessary on that basis
There's no denying that Jehovah's Witnesses do quite well in most scheduled surgeries because in scheduled surgery, an aggressive blood conservation protocol can be implemented.
Emergency surgery is a horse of a different color. The videos produced by Jehovah's Witnesses do not deal with emergency surgery in depth, but Dr. Aryeh Shander does observe that it's important to get the bleeding stopped as quickly as possible. But that's not always possible. There are plenty of accident scenarios where the victim can experience catastrophic blood loss before help even arrives.
What happens if somebody is accidently shot through the abodomen with a broad-head hunting arrow? What happens if an ectopic pregnancy causes a woman's fallopian tube to burst? What happens if somebody's leg is severed in a water skiing accident? There was a documented case in California where a Witness child fell off their skateboard onto the sidewalk and died. You can bleed to death from a broken femur in a matter of minutes. Very sad. There is a window even after somebody has technically bled to death where they can be resuscitated and brought back. But it takes massive transfusions to do this.
Pathology and Oncology are two more facets of transfusion medicine. Jehovah's Witnesses afflicted with severe forms of leukemia, aplastic anemia, lyphoma and Hodgkin's disease do very, very poorly. Since there is a period of months when the recipient of most forms of bone marrow tranplant is not producing red cells or platelets on their own, how can this possibly be done in the absence of transfusion? Intense chemotherapy also brings the production of red cells and platelets to a complete standstill Multiple transfusions are typically needed to keep the patient alive during chemo.
The list of non-sugical situations and conditions where blood or blood components are indicated go on and on and on. They would fill a book.