(LB)
I mostly agree with these observations. I think the message we are trying to convey is 'unmodified', along the lines of non-GMO corn. We prefer our bodies & genetics to stay as-designed by the Maker.
Searching for the proper word since Pureblood does have negative connotations thanks to Hitler and Hollywood.
Also 'non-GMO' and 'anti-vax' and similar terms start with a negative. Which as other anon observed, preferred terms should be 'positive'.
Natural blood
Original blood, etc.