Can confirm, Boyfriend is Japanese and an absolute Shitlord, and I lived in rural Nagano for a while.  They absolutely do not give a shit about calling out fatasses, especially the elderly. Though recently, Japanese lady planets have had their own FA movement, and started calling themselves Marshmallow Girls, and there's a magazine out for it and everything (La Farfa, if you're a glutton for punishment and want to look for yourself).  Thankfully, it's not catching on at all.