I don't read it that way. I read it as a message to not be discouraged if you aren't immediately a master because nobody is immediately a master. If everyone looks at the results of their work and says "I can't do this" then nobody will ever improve. It's a hacker's viewpoint for sure. Don't let the perfect be the enemy of not just the good but anything. Fail fast, etc, etc.

I didn't learn to use a command line or write python scripts instantly. I spent thousands of hours banging my head against the wall. Progress is slow. Imperceptible even. Stick with it and eventually you get there.

Does this mean everyone can do everything? No. It means you'll never find what you are good at it if you just give up at the first sign of failure.