It’s partly about money. It’s a common (and reasonable) parental response to anyone attempting a career in the arts. Very few can make a sustainable career out of it. And those who wash out are generally in tough spots.
The open relationship desire itself is already the hentai logic time line. It happens, but is extremely rare. What doesn’t happen is the potential overlapping harems that this author is turning this into.
One counter. Swap thinking and acting. While the original cause of her thinking she’s trash is not her actions, those actions reinforce it. She has to stop acting like trash in order to stop thinking it. It’s why these cycles are so difficult to break.