It's basically turning women into quite litteral ''objects'' and there's just no way to rationalize it in my book, especially as a woman. Different cultures and all aside, this is an objectively wrong practice.
Yeah, there's a reason they're called "idols". And idol is not a "filthy" real woman, she's your "pure" dream girl, someone you can fantasize about, but never reach. But that's OK, no one else can either - and a relationship would shatter that dream. It's selling a certain image, a fantasy, and nothing is allowed to interfere with that.
Really not my thing either...
I'm curious, does the same thing happen with male idols?
Creepy straight dudes once again ruining things for the rest of the world. I forsee this becoming a major issue in the future, hiding who you are never feels good.
I've heard a small amount of Japan trying to move away from some of the idol culture problems, and some awareness, so hopefully the future is brighter.