hmm... i don't know, does Japan have more cases of rape and everything?
I rather think the HK adult entertainment industry is kinda weak, low quality and tasteless compared to many places in the rest of the world (Japan, US, UK have way hotter models and publications). And I'm sure Japanese AV is a major contributer to their economy.
The major criticism to HK now is, these gals who are releasing albums and stuff are really child looking, and heck, they are not hot at all..... Why don't they do it proper and have some actually hot model? Seems to also alleviate the problem where they look sooo young (even tho some of them are clearly not) and they look under-developed and everything... but still, one buy one poses, fair game.
I think AV is just an industry. There's no point supressing it. It's been around for thousands of years. I just watched a CNBC documentary on the Porn industry. Intriguing and really, it's just a business. What's in fashion for porn changes all the time too, and what's acceptable shifts. What gives you the higher moral ground to call other low and cheap and degoratory to society? I don't really see people who half lie their way selling cars and houses and mutual funds and bank services any better in integrity.