Yes, it could be the fastest way to get rich but it could also be the fastest way to get broke as the market is very volatile. One just have to be smart enough in trading/investing in cryptocurrencies.
It is fastest way to get rich if the value is getting higher but we know the value of crypto currency is unpredictable we don't know what happen when it down or up, and a wrong move or decision you make it may cause to loose your money that's why we need to more knowledge in cryptocurrency and be bright to make decisions in investing and trading in cryptocurrency .