His statement doesn’t make logical sense but I understand the point he was trying to make. As long as there continues to be inflation, there is no limit to how high Bitcoin can go. Anybody looking at a price chart can come to the same conclusion. Even if you buy at current prices, you will still come out ahead eventually if you continue to hold.
Bitcoin prices just work with patience; no matter how low or how high you, as the holder, got your coin, there is a level to which you should be patient enough, and the profit you hope for is going to be gotten from Bitcoin as long as you don't sell prematurely. Just like what CZ was trying to explain, if you are not lucky to buy today and Bitcoin gets to a new price, you can be patient, save up that money and buy when the price falls below ATH, which he refers to as DIP.