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.
You have said it all, in a few sentences... A lot of persons (like me, when i started.) came into the system thinking its one of the fastest ways to get rich, i got burnt heavily.. Although i finally made some recovery after a lot of learning, i realised it all depends on how smart one is, as the whole market is very volatile.