There's a simple explanation for that. When I realized that it would be better changed I could not change the submitted title here on Hacker News (they are only editable for a while, an hour I think). So I was stuck with the title I chose; I could have changed the title on my blog but then there would have been a difference between the two. So, I decided to stick with the original title.
You still seem to be advancing your original point that hobby programming or side projects is an inferior pursuit relative to professional programming. McAfee was a shareware project, eBay was written by Pierre in a matter of days. I've seen many projects that were of much higher quality than many professional enterprise and startup projects.