No wonder that article is written by some casino site
People are playing around with Martingale for decades. Martingale doesn't work and is a safe way to the poor mens house. It only works, if you have unlimited money and if you have unlimited money, there is no need to play Martingale
Even playing Martingale the safe way like proposed in that article will get you to a point, where the mental stress is ridiculous. At some point you are risking an insane amount of money just to recover your previous losses and win a few bucks on top.
VC, ICO and IPO is a risky business too, but you at least have a fair chance from the get-go, assuming you did your due dilligence. You will still lose all invested money most of the time, but you will also hit some homeruns, which easily make up for previous losses.