Yeah it already hits 1,600 but I think it is pretty much hard for it to be in 4,000.
I think maybe in a couple of year it could but who know's maybe it could.
The prediction in the OP seems to be closer to reality than what we thought back in the day, it seems completely realistic that bitcoin could reach 4000 dollars before the end of the year, that seemed to be impossible at the beginning of the year and that show to us how the interest in bitcoin is increasing.