I agree that I should be down-voted to the extreme. I chose the vagueness because calling out individual YC companies is now considered bad form. I was trying to be polite.

Compare their SEO strategy to a YC company that repairs iPhones, or the one that sells cars. If you don't know the urls, send me an email and I'll tell you the ones I am talking about.

The YC anti-SEO pattern exists, it is just not polite to call out SEO mistakes, because if anyone builds anything, then we must be supportive.