That pretty much sums up my experiences with Japanese women so far. My first exposure to dirty films as a teenager (I'm 36 so that was before the internet) was through 70's Nikkatsu roman porno that a nearby cinema was showing in my hometown so in a way I've been conditioned to find Japanese women attractive but in recent years I've come to realize the cultural gap is probably too wide for any kind of semi-serious relationship.
I know plenty of gaijin guys who got burned just as badly if not worse than me, and I also know plenty of other guys trapped in loveless, sexless marriages in which their wives take all the money and only leave them the bare minimum. At my workplace, when I get 手当 in addition to my normal salary, it's always in cash, even when it's something like 200,000 yens, amounts that I feel uncomfortable carrying with me. My boss explained to me that it's pretty common in Japanese companies and the reason they do it is that it's the only way a man who is married can dispose of his own money without his wife knowing it, so it seems those attitudes towards the roles of man and woman are pretty deeply ingrained. Time and time again I've met Japanese women whose sole ambition in life is to get married, stop working and let their husband support them. Well thanks but no thanks.