While I really enjoy reading Quora and think that it has enormous potential, this type of comment shows me why I don't think it can reach the mainstream. Simply, the community is not meant for everyone. While Twitter also has a small portion of people tweeting, Quora goes even further- towards generally discouraging people outside of a small group of technically inclined giants in the startup world. I don't know how they are going to spread that into other fields in a way that continues to interest people when so much interaction with the site is frowned upon.
Agree completely. Didn't really like the tone of that post either. Pretty presumptuous actually and condescending.