At what point does one differentiate between obsession with idols and obsession with pop stars in other countries? In my experience, J-idols appear to put a lot of work into their personalities as part of the group and their "talent" which goes beyond the fetishization of beauty we usually associate with objectification. In other words, do we know that Japanese fans view idols as people tending to objects?
I don't even think that's the issue. I saw a documentary on Japan and they visited one of these idol "talent agencies". It's an incredibly creepy structure that's just not comparable to anything we have in the West.
That's not too far off. But instead of having overly controlling parents the idols have overly controlling corporations running their lives and 24/7 scrutiny from an extremely fickle and difficult to please fanbase.