Thank you for the link, but there are a few details in the article that conflict with my understanding. Sadly I don't have time at the moment to do the research and write a well documented essay on this subject. I note that that the cited report was from 1997.

For now I'll limit my thoughts to just this:

It would be nice for donors and the general public if there was more transparency in:

the breakdown of end uses of the donated products the safety record of the products the risk calculations behind the deferment questions the accuracy of the blood testing