I don't think it's tinfoil at all. Couple years ago was at doc appointment and he asks if some guy can come in and talk to me. Guy works for some "pharma" company and they want my dna. Gave me a shiny brochure and said it was just for research. I declined. I also think 23 n me is offering a "service" that the sheeple think is cool but I have a feeling they're looking for specific markers. Don't send your spit to them.
My personal belief is besides the Rh factor stuff, some of us have abilities (psychic etc) and they want to ID us