Appeals to authority and hyperbole are rhetorical devices used to accomplish a goal, which here, is to convince people who are reading all the "meh" comments to give Quora a legitimate look. It's interesting that you feel the need to crusade against a pretty harmless opinion post.
"In other words you don't mind using Facebook or Twitter to log onto Quora and you want to slag people who do and want them to have to "come to terms" with your attitude. Way to go. If "no one cares" why are you making such a song and dance about it here?"
No. The fact that lots of people don't mind connecting with Facebook and Twitter means that if you want to build products for those people, you have to come to terms with that.
And like I said in the paragraph right below, if that doesn't resonate with you, then feel free to ignore it. It's OK if you're not building stuff for "normals".