The quote is flawed because it assumes too much. 'We construct a fantasy about how we are superior to those who don't share our views?' Oh, is that so? I like how the author of this quote is labeling anyone who is "religious" as self-righteous. How insightful.
"Sitting down, Jesus called the Twelve and said, 'If anyone wants to be first, he must be the very last, and the servant of all.'" - Mark 9:35
"Woe to those who are wise in their own eyes and clever in their own sight." - Isaiah 5:21
These are but two of many, many verses on pride and humility. Jesus befriended thieves and murderers, and Christians are called to live in the same humble manner has he did. While I can't speak for other faiths, any Christian who is being condescending to you isn't following the teachings of Jesus at all.
Furthermore, the author can only assume that we aren't inadequate, unsatisfactory and helpless; in fact, the author seems to want to invalidate such an opinion entirely. Egotistical much?
The true irony of this quote is that the author is making very arrogant assumptions while at the same time calling out religious persons for believing themselves to be "superior".