What's so special in that? Search this Speculation section, you will find many predictions for $10K, some of them with exact timing too. It is not so special in case of Bitcoins and cryptocurrencies to make predictions because there isn't any parameter to do so. This market moves random and every prediction is more or less guess or inner wisdom!
i don't have enough information about this guy (Tim Draper) to say what is special about him but i have seen all the rest of them saying it will be $10k, and i have to say most of them were pretty hyped up because of the 2013 pump/bubble/willyBot incident and they were just saying it and not based on any reason. something similar to the current speculation of random guys saying bitcoin will be $1 million by 2020. it can happen but that doesn't mean all those who say it are making an educated prediction.
it is as they say: even a stopped clock is right twice a day.