That's the time we can officially say that after 2/3 of the Q4 we have seen a great crypto market crash, and this year is totally different when compared to last 3.
Now, I think the question is, how long will it take to rebound to the levels it was during the boom? 2013 crash took basically 4 years to get back to the point it was (if we are talking about Bitcoin price). Will this take as long? Anyway, seems like a real bear market is ahead of us.