He makes that amount by telling you some bullshit strategy about how he makes that amount, it's like an evil circle.
Why did he even mention the jump in btc? It had nothing to do with his strategy since it apparently wasn't from trading nor mining. Why? To lure newcomers to buy his shit, that's why.
The Bitcoin price raising just attract people to "Gaining Value". Also the $ he say he make is so precise, so generic, this sound like the thousands of other "how to get rich" ebook you can buy/get scammed with that pretty much tell you jack shit.
I actually read many of them from people who "shared" them and it usually say things like;
"People want something like "lose weight fast" "make money quick"" and you can just keep selling them stuff because they are going to buy it, then just throw it away if its too hard, or too much effort, or too vague." and forget and most of the time not ask for a refund.
So basically they tend to tell you how to rip gullible people off and how to get away with it, since you truly really issue refunds.
Either that or its one of those where you just get scammed.