I take it you're being sarcastic, but the negative comments you're receiving are I think because you departed from giving advice on implementation and strategy,

I take it you're being sarcastic, but the negative comments you're receiving are I think because you departed from giving advice on implementation and strategy, and attempted to give a piece of cryptographic advice. The only way anyone gets to imply that public key crypto is less secure, or more dangerous, without being challenged, is if a new attack is presented. Otherwise it's all innuendo and handwaving. Most apps and sites may not derive any advantage from public key crypto, but you can't say that for sure until you see a site (or SSO multi-site) design.