Something to note on thinking everybody is a super-brilliant "10x" programmer: You're not seeing the same people post deep, insightful things here on HN. There are people who know a lot about this one thing, and can write very accurately and intelligently about it, but don't know anything about HTML or desktop programming (C, C++, others), server-side logic, etc.
The same goes for each of those fields, and every other field--there are certain people who know a lot about them, and when the topic comes up they talk about them. The reason it seems like there are a bunch of super-brilliant "10x" programmers is that there are many, many of these specialized people on HN and around the web, and at least a few of them always have something to say about a topic. It doesn't mean they're all super-brilliant "10x" programmers.