Regardless of your own experience, there are probably not that many "child geniuses" capable of learning how to operate a high end PCB design tool at the age of 12.
I never said it was hard to learn Altium, I said it had a steep learning curve, by which I meant time wise, it has far too many options for a beginner in PCB design, learning PCB design is hard, the tool is just that, a tool, like any others, the fact it has more features means it's going to take longer to learn what all of those features do.
Pirated versions are freely available to experiment with, I'm quite sure a lot of people use these versions to produce commercial hardware, it has been said many times that they target larger corporations rather than individuals or hobbyists.
If AD works for you, and you can afford a "personal" license, then well done you, the rest of us have to rely on the companies we work for to stump up for the license, which they do, it can just sometimes limit your exposure. I know that a few AD courses cost a few thousand GBP's, so I did it the hard way and just made something with it, but I already had a basic understanding of the options and PCB design from previous tools / experiences.