The problem with relying on personal anecdotal evidence is that it is inherently biased. The only way to truly answer the question is find a way to reliable measure coding skill. Otherwise you find yourself making the same mistake you think Jacob is making. Using faulty data to back up an assumption.

Part of the thrust of Jacob's talk was that there is probably a whole class of developers out there who would be just as good as the rest of us but they can't get entry due to an assumption that Coding is an innate skill and not a learned one. He even gives examples like the lady who had written a working distributed GIS processing pipeline but didn't think she was a Coder.

I'm a little like Jacob in that people automatically assume I'm a 10x coder. I have a pedigree from Google. My github and bitbucket accounts are full of small libs and projects I've played around with. My code has been used by CouchDB and the list of languages I have at least surface knowledge about is huge. There is exactly one reason for all these qualifications though. I've been in the industry for more than 10 years and I was a hobbiest programmer for several decades before I was in industry. When I started learning I was doing gw Basic. My first "real" programming languages was VB6. I was a stereotypical below average programmer. I didn't know a linked list from a hashtable. All I needed to turn into the "ninja" people see when they look at me now was time.

I've met a lot of people who could absolutely reach this same level. And 90% of those people with potential resist trying because they think "I'm not really a coder". The myth really does need to die.