I think it's terrifying!!! I can imagine blood banks funded by the wealthy where young recipients are screened by age. I can see elderly wealthy siphoning blood from the needy. It's really distressing. As you say, so much exploitation going on already. Organ theft, organ selling. Restricted access (by ability to pay) to top medical interventions. Now this. In the U.S. you can give plasma twice a week. What if you can't pay your rent? What if you need money for food? Go to the premium blood bank, funded by wealthy recipients, and get premium pay for your blood.
It is a grotesque and foreseeable scenario if this theory proves true.
RE: Young Blood, Old Questions: What the Science Really Says About Ageing