If you prefer to hold bitcoin instead of fiat and are willing to spend a little bit effort on that and digest some transaction costs, I think it is very likely you will become wealthier.
However the promise to get rich is something entirely different. Not many people in the world can be rich. You have to take out-of-normal type of risk. The more common bitcoins gets, the more normal it is and less riskier. The later you get into btc, the less likely it is that you will get risk. However it still makes sense financially.