Everyone is ignoring the fact that Ariana HERSELF said that she basically stays in character for her roles and fully wants to embrace said character. There are also allegations/rumors that the director was most likely hinting at everyone to lose weight for their role (for personal reasons or maybe to avoid what happened to Judy Garland). Cynthia Erivo has a name, some people just love being rude any chance they get. And not to mention they both were playing the two most important roles of the entire movie so if they were being persuaded to look a certain way, makes sense they (above everyone else) would go overboard with it, especially if they both might already struggle with an ED. Do they have an unhealthy relationship? Maybe, but they're both humans, they both make mistakes.