This method buy the DIP and HODL is one of the most trading strategies or tactics in the Bitcoin and crypto market or in the investment cycle. This is when most investor like acquring coin having the believe that the price will some day go high, same also in most cases when you think the price will go high but eventually it starts deprecating in value.
Also this method doesn't guarantee 100% profit believing that since the price is low at when is been aquire it will definitely hit at ATH, so in such case as an investor one also need to have two things in mind which is either gain or loss unless you wish to HODL for a longer period of time.