At this current state of bitcoin it seems kind of impossible for bitcoin to deep to $20k in this bull run, it really impossible, it will be very hard seeing bitcoin at $30k in this bull run maybe after the bull season is over and the bear season takes over then no doubt it might fall to that extent. Bitcoin is still in a good state no news of ban which will trigger people dumping bitcoin, even when there is a ban bitcoin still rises because the people involve still look for some other way to buy, so you saying bitcoin will dump to $20k is really much impossible in this present state.
When bitcoin starts to go down a lil bit, some users are predicting about the fall of bitcoin. But for those who have seen the ups and downs of btc throughout the years, we can say that the level of btc right now is much different than in the previous years. The institutions as well as big companies that are into bitcoin today have better understanding on the capability of btc in the market.
Sorry OP your post invites FUD. No blog specialized in cryptocurrencies has created an analysis that indicates that the price of bitcoin could fall to 20K. Bitcoin is not a bubble. What will happen now? The institutions will be buying the bitcoin that you are leaving.
Although in the current situation the market is suitable for any investor. Let's not forget that while bitcoin continues its bull run, altcoins are also showing their best moment.
And if he decided to get out of crypto, no one is stopping him from doing so. Just don't regret few years from now, when bitcoin has value that very few can afford to buy. Everything is possible to happen but going down to 20k level, is I believe far from happening.