They will not crash into zero, they will hit their bottom out then bounce during the recovery season and that always happened with the coins. I wonder when will that happened because the down trend is not yet over I think and it makes my portfolio go down slowly. I'm still waiting for the recovery period so that all of my coins can be save and hodl until next year.
Remember there is a lot of projects are going to the zero due to the lack of the progress in the development. The downtrend have been giving a lot of impact to the price of the cryptocurrency itself but the result of development will give a lot of result about can the project still exist in the future?