Why don't site operators take responsibility for themselves to not leak their users information unnecessarily? We've taken it upon ourselves to chastise any web

Why don't site operators take responsibility for themselves to not leak their users information unnecessarily? We've taken it upon ourselves to chastise any web property that doesn't properly hash their passwords--we could just have easily say "if you don't want your password to other sites leaked, use different passwords". But we recognize the unfair burden we are placing on end users in that case. The case with CDNs and information leak is similar.