Drag Me To Hell was about having an eating disorder. The stuff with the Romani stereotypes was pretty bad, at least they were initially trying to make it seem ambiguous if it was real or not and that the main character was wrong for having denied the Romani grandma a loan just because of her own biases.

It's not just you, I agree a lot of horror movies are reactionary - but a lot of cinema itself is pretty reactionary (like Top Gun or Wall Street for example). It's a product of being part of the system we're in. You're discounting horror's ability to subvert these as well as how cheaply good horror can be made, these mean that some smaller indy teams can make genre films outside of the main system of the system.

Films like Get Out. Hard to call that reactionary, deals with Black people living in America and how libs aren't there friends either. Babadook is about dealing with grief. Teeth is about a young lady chomping off peoples' dicks when they try to sexually assault her. Parasite is about modern capitalism. It's not just modern horror, either, Rosemary's Baby is about women's control over their bodies. Night of the Living Dead had a black lead in the 60s and was about the dangers of mass consumerism.