No, I don't (and haven't) said transfusion is never necessary.
My turn for a question: Can open heart surgery be performed without blood transfusion? and as a corollary,
Has the use of blood transfusion in many cases INCREASED morbidity and mortality post operatively?
To your second question: it depends
to the point of this article, I can say for a fact that in the case of accidents etc where a person has lost a lot of blood it is NECESSARY to have a blood transfusion or the person will die. Your Jehovah's Witness point of banning blood transfusions completely is wrong on this count
Ah, so you do think blood transfusion is necessary at times — good. Then you would disagree with the Jehovah’s witness philosophy on this, correct?