Those guys were and still are making huge returns on their investments, but they deal in the dozens to hundreds of millions type investments.
This guy is still talking in the sub-million range. That isn't even a spec on Wall Street.
If a guy with small savings would like to strike it rich on wall street, he could invest a safe $5K in a few penny stocks. Put $1K each in 5 separate stocks so you can at least be "diversified". Of course, this is pretty much just legalized gambling, and you must be okay with the prospect that you may never see your $5K again. But, if even just one of those $0.10 stocks fluctuates up to $1.00 and all the rest tank to $0.00, you've still doubled your investment.