The reason so many Chinese models use face filters, is because they would literally suffer repercussions from the government for plastering their naked bodies with their actual faces online, (not to mention it's a huge social taboo in China). So it's less to do with female insecurity, and more to do with protecting their public identities and being afforded life's everyday necessities. Would it be nice to see Chinese women without face filters? Yes, but that ain't happening any time soon