He also says that Bitcoin could reach $8000 before that. The question is whether you have the stomach to hold on to your bitcoins when it drops to those levels. A lot of people who bought bitcoins during the last few weeks might get disillusioned when the price drops to those levels and might sell out.
Bitcoin is very good at getting rid of the weak hands, we know bitcoin can reach 40k eventually I do not know if it is going to happen in the next year or not, but the problem is that the trajectory is not going to be always up there are going to be moments where the price goes down, there are people that bought at 19k, what do you think they thought when they saw the price close to 10k, I will be surprised if anyone that bought at those prices is still holding his bitcoin.