Seems like you're sending plain text emails, no? I have links for websites, resume etc. in the signature so I am not sure how this is conducive to that. Unless there is a method to add a signature with links?
Is the creepy lable being attached to this idea because transfusion services are only currently used by people with higher income/assets? Would this still be creepy if poorer people had access to it, or would we call it a human right? I don't think it's necessarily wrong to receive a cosmetic(?) blood transfusion if the parties involved agree to it, I don't think it's any less creepy than cosmetic surgery.
Edit to say: if there's any efficacy in blood transfusions being useful for neurophysiological benefits, then this procedure should be available for medicinal purposes like enemas I think it's more efficient (and economical for a business) to use synthetic blood, though.
It is irresponsible to simply call this "hiding". It is more reasonable to assume this is psyops by an adversary, and as such releasing information without doing due diligence is just causing harm.
Overall, if such events are true I wonder what effect this will have on politics driven by religion-based agendas (many who drive such agenda are not even pious or adherents in any form of the word). Maybe this is finally bring an end to religion-driven politics.