What Lill said makes an awful lot of sense. If they mess too much with the blood issue, they'll upset the elderly ones. But, as she pointed out, they seem to be laying the framework for "new understanding provided by Jehoopla."
I think they may ease it in gently, and when our parents die off, there won't be many left, between deaths of the elderly ones, who are really their backbone now, and others getting disgusted and leaving.
I rarely see a cargroup in my neighborhood now, but until somebody mentions it on the board, I really don't notice. I doubt anyone will even miss them when they dwindle away to nothing, unless something reminds the public..."Oh yeah, whatever happened to those pains in the *ass who used to bang on the door at supper time? Haven't seen them in years!"