I think it best to show what it says in the Bible that Jesus’s taught , mercy not sacrifice Mathew chapter 12 . Nothing entering in to a man can defile him Mathew 15 I believe. Also going back to chapter 12 the whole chapter is about willingness not to let a man or animal die because it would be breaking The sabbath to save him it.
One can also go back to Leviticus chapter 17 and read towards the end that it was ok to eat a dead animal blood and all of you didn’t kill it. The whole chapter is about respecting the life of the animal you killed by pouring out it’s blood.
Your point is well stated and others have used the illustration of a married couple putting their wedding rings on the night stand when they go to bed each night. A fire breaks out and the man wakes up to see what’s going on and notices his wife is passed out from the smoke , he doesn’t grab her and carry her out but instead grabs her wedding ring.
Its also worth mentioning the hypocrisy of the cult in this subject. They teach no blood but then turn around and say that blood fractions are ok. Some of these fractions like hemoglobin are in fact packed red blood cells with only their outer membrane taken off. They also allows for the use of cows blood again bovine hemoglobin with its outer membrane taken off to bypass the need to type the persons blood. This product Hemopure has been used successfully by JWs in the past and the once bankrupt company is now back in business. This is hypocrisy at its highest level!