Insearchoftruth:
There is nobody in modern society that has not accepted a blood fraction in one form or another. Fractions are everywhere; even in childhood immunizations that are required for attendance in public schools in developed countries. Many of them contain small amounts of human albumin.
Post exposure vaccines, allergy shots, antivenins for snake and spider bites, and innoculations for exotic and tropical diseases all contain sizeable amounts of both gamma globulin and albumin
The allowance of blood fractions in the JW community is nothing new. Basic plasma proteins like gamma globulin and albumin were first allowed over 50 years ago, in 1958. JW's have been told over and over what is allowed and what is not. Many don't get it at all, and the rest aren't interested.
A different face of the same basic phenomenon exists in the XJW community, where a common misconception is that the allowance of blood fractions is a recent development. It's not that it's a recent development, it's that people don't seem to pay any attention to this subject until after they have left.