It was hyperbole. I obviously didn't believe that literally zero people browse Quora. I just mean that the site feels essentially dead to me. Ever since Google apparently killed their results, I haven't seen any links to a Quora post. I also don't hear any updates about the company, which used to be a regular occurrence around here a couple of years ago.
Thirded. I feel like an idiot for it, but I do click and read the Quora digest links in my email. They've got an excellent recommendation system set up for that (SVD?).