Well, it's definitely true to some extent, since there will 100% be some genes that contribute in some way to a person's personality that are colocated with genes responsible for blood type.
Do you want people to associate AAVE with the term? I'm not quite finding the right term but it seems "unprofessional", in a sense.
It would be like advocating for Christmas Day to be formally recognised as "Chrisso" or "Chrissie" here in Australia. Yeah we all informally call it that, but it would be embarrassing to codify it.
I do, and this is a far bigger discussion than I can get into here -- but it's about respecting/understanding Black American cultural contributions ..
.. which is hard because when you start making accounts of them you begin to realize how universal and yet unrecognized so many of our contributions are.
It doesn't help that, in the fervour to amplify black contributions, there is a lot of embellishment, appropriation, and even outright lies, often at the expense of White pioneers. I know we won't agree on this point, yourself clearly being a proud black man and myself a proud White man, but that is the sense that I have around this topic now. If I'm being frank, I find that I am conditioned at this point to treat these claims with a great amount of suspicion, as they often appear to be motivated more so by racial interests than historical accuracy.
Can you please, in order to add effectively to the conversation, provide some links to the contributions of Black people that have been embellished, appropriated, and fabricated at the expense of white pioneers, please?