The title means that you double up your money in 25 days. This video was made as a mockery video for all the people believing in crypto and was not researched at all. So currently it's so ironic that Bitcoin has indeed doubled up from the time of his video.
Personally, I am glad that Bitcoin took this Bullish approach right now but at the same time, I really want BTC to pull back a little so that a few more people can enter the market again. For once my Mom wants to buy some Bitcoin just so that she can brag it to her friend group.