Although price of whole crypto market is really low but I don't think it'll affect to sustainability of cryptocurrency. This is not the first time crypto world has to face to crisis like this but crypto world still can alive and develop until now. I think this time it'll affect to much and maybe at the end of this year everything will be better although just a little bit.
The market is not the best of times now, and all the coins fell as low as we did not expect, but as soon as growth begins, the situation will change and many coins will win back their positions. Crypto will show its capabilities.