This same argument would naturally hold true for blood as well, and it seems that the Society has decided to acknowledge that.
I agree it holds true from a logical perspective, but as recently as this year Watchtower again trotted out this piece of admittedly bad information for consumption by the masses. It's disgraceful. Carl Sagan had it right when it comes to Watchtower!
One thing Watchtower NEVER lets get in the way is facts.