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.
I think we should disabuse our minds about using crypto to get rich fast because crypto business is not a get rich scheme as many think, crypto business takes time and energy to succeed just like any other good business,if you plan your time very well you could make money.