People seem more upset that she was doing this in Taiwan. That's the issue for many -- she was doing this outside her own country. Pornography is besides the point.
I think you're missing the point. I imagine that if a porn star flashed his/her underpants in front of a Taipei squad car and took a picture, the cops would be pissed. I imagine if some dude or some lady did the same, the cops would be pissed.