A coin always has a downside. On average, any bank can give much greater guarantees with little interest. In general, crypto projects offering high interest rates put your money at great risk. This should always be considered.
Cryptocurrency market is very risky. I think that everybody understands this remembering the experience of 2018 when cryptocurrency falled during one year. Now cryptocurrency market raise. Lets see what will happen. Now EDC is growing and a lot of people earn money on it. But how long it will grow nobody knows.