I agree this isn't horror in the sense of make believe horror. It is based on real events that happened both within the continental United States and even in the Caribbean island of Puerto Rico which is an American protectorate and its inhabitances American citizens. I remember reading about eugenics that were conducted on the island three decades ago when I was a freshman in college. Clarence Gamble, heir to the Proctor & Gamble and Ivory Soap fortunes perform such operations from 1936 to 1960. Gamble was also notorious for medical experimentation. He expanded the distribution of oral progesterone, accepting donations from pharmaceutical companies who, unable to conduct trials in the US, bid for access to the women in his clinics on the island. Through the years Gamble, " was involved in initiatives in Israel, India, Hawaii, Egypt, Japan, Ceylon (now Sri Lanka), Pakistan, South Africa, and, in the US, Appalachia and the South, where he maintained that a reduction in the birthrate among African Americans was the solution to the region's poverty."
Back to the film, I also agree the ghost weren't necessary and did more harm that good. I also thought the ending was lame and very stupid. It's a shame this subject matter showed up in a Blumhouse flick when it really deserves to be told in a legitimate documentary.
Great thing about our current era is this stuff is now documented on the web and a Google search for: United States and Eugenics will bring up tons of detailed information. So much for the The Hippocratic Oath in the best national on earth, as they say. Umm, yeah.