Threshold (2020) review

A music teacher (Joey Millin) - who's going through a divorce and doesn't want to sign the papers - takes his sister (Madison West) on a trip to "cure" her of a "curse" that was placed on her ... and she may or may not have been in a cult (she's also a "recovering" addict).  I applaud the extreme DIY nature of these kinds of movies - it was shot on cell phones with a small crew and no real screenplay and it looks pretty good considering those limitations (Robinson is a cinematographer who's worked on music videos) ... but you can also tell it was largely improvised (which is rarely a good thing) and forgets it's supposed to be a horror movie the majority of the time.  Also, and I feel like I'm repeating myself, but what is with modern filmmakers and their obsession with naked and obese people?  Have we shifted our fear of the Zombie Apocalypse to carbohydrates and aging?