The reason foot-binding is considered barbaric is because it cripples and mutilates the person undergoing the process, not because Chinese have some sort of foot hangup. In many cases the feet are literally broken in half and folded under themselves, and as a result of this, the person is no longer capable of walking properly.
I have first-hand knowledge of this because my grandmother on my wife's side *had* her feet bound, and I spent a day in her village when I visited China three years ago.
Anyway. One possible reason why there isn't much foot tickling in Japanese videos is because the Japanese don't produce tickle porn for the same reasons we do. We produce it because we enjoy the sight of the girl being tickled. They produce it because it's yet another way to humiliate or torture a bound, helpless victim... or make her pee. The Japanese *really* have a thing for bondage and watersports. Or upper-body tickling gives them an excuse to make the girl take her clothes off. Note the tremendous amount of nudity in Japanese tickle porn? Moreso than here? Maybe. But a barefoot girl doesn't exactly scream "SEX" in the way a naked one does. In Japan it's all about the sex. (Witness the predominance of vibrator tickling videos, like the ones that are all the rage here now).
I can safely say, though, that very few of the Chinese or Korean women I know think feet are even remotely amusing. Most do consider them "dirty"; when I filmed Yang for Ticklish Situations she told me I had better go wash my hands when I was done tickling her feet.
and coming from a culture that takes off the shoes every chance they get including public resturants.
Nothing fetish-related, they're just all neat-freaks. Every time I go visit my wife's boss the shoes have to come off because they don't want dirt in the house.
Food for thought from the guy who's been there.
😀