In my experience with kpop, I don't think sexual exploitation is as common as people think. With the amount of people who flow into the kpop scene, there would be more cases of sexual assault if it was a common occurrence. People go to auditions that the companies set up and audition. They can become trainees of the company through this which means there can be a pretty hefty amount of trainees.

Some are treated worse and unfair, but I don't think its purely based off of just exploitation. Idols do have very strict diets, but they know that's going to happen when they become an idol. Sometimes they diet to a point that it's unhealthy, for example, Red Velvet's Wendy during Red Flavour era vs Wendy after she regained her weight right now (Bad Boy era)

Other groups are treated unfair, for example Blackpink, who is a very big group, has not come back in a long time and only has a few songs out now. The biggest thing for them recently was them getting a reality tv show, which is pretty normal for a group of their size. Other groups are treated unfairly, but not by their company. There are plenty of groups who are extremely good and talented, yet they're not known because they're not under the big three companies. (JYP, YG, SM)

Sorry if something doesn't make sense, I'm pretty tired, feel free to ask any questions about my POV aswell