In terms of price, yes this is easily possible.
In terms of the time period, I don't know.
He may be right, he may be not. I don't care to be honest.
Bitcoin's real value is much higher than that.
Question is, if you're patient enough to hold that long. I'm talking about another 10 years to reach 300k-500k per coin.
This is where you should look at and focus on. Not that short term stuff.
You are correct but at the same time it is not going to be easy to hold for that long, I have only held bitcoin for about 18 months, which is not a lot and while I do not have any plans on selling, if bitcoin were to touch 40k to 50k per coin is going to be very difficult to keep holding at that point, since there are a lot of things that I could do with that money to improve my lifestyle.