A presentation about design that shows instead of tells is hardly condescending! This is not an infographic. An infographic is a summary, this is a point-by-point walkthrough of the meaning of each design element.
I must disagree wholeheartedly, all the more regarding a tool as valuable as Wikipedia. As small as I try to keep my identity, this is part of it.
I suspect some of the hostility we're seeing is a delayed reaction to the prevalence of this viewpoint here. HN no longer has consensus about which of the Two Cultures is favored.
P.S. Form over function is not evil.