I'll make an argument, software development is a profession with logic at it's core. It's inherent in just about everything you do as a developer.
You hence need to be capable of logical thinking that is to be able to make logical deductions.
When you get a job as a developer you'll hence most likely be working with very logical people, people who can deduce when your arguments and ideas don't make sense, and will expect you to back down if you can't logically defend your claim.
GoodNewsJim.com is probably one of the most batshit crazy pits of insanity and illogic I have seen in a long time, hence, it's not surprising that for 10 years he has been unable to fit into a role that requires him to show at least some degree of logical reasoning.
But for what it's worth, his post was full of assertions with no actual argument, he told us he's competent, he told us he had a degree from Carnegie Mellon. He asserts his competence, he asserts his talent, but he provides no actual evidence of any of that. What has he worked on? what has he done? How does he know he is talented? The employers he dealt with obviously did not think so.
I got a job as a software developer before I even had any kind of degree. I can go out and find new development jobs within a couple of months if I wish to change jobs and I see very good payrises every time - even my first development job without a degree was paying well above the national average. I therefore have a hard time having any sympathy for people who claim they're awesome then whinge that they can't get a job given that I've always found it trivial even when I had less qualifications than guys like this, and despite living in a region that isn't exactly stand out for number of development jobs. People like him had every advantage over people like me, yet still couldn't find employment whilst I could. It's for this reason that I'm certain that they are the problem, not the industry. The wealth of listed jobs coupled with the incredibly low levels of unemployment in the industry back this up. If you can't get a software development job in a reasonable amount of time, then you are most definitely the problem. You're the 1 in 50 (the unemployed 2% in the industry) that are just unemployable.
Seriously, if you only average 1 interview a year in this industry there's something very fucking wrong with you - that implies they were rejecting him before he even met them. That takes quite some doing and a pretty crappy CV. Perhaps he plastered his CV with comments about how god spoke to him too?