That doesn't sound strange at all, because it actually sounds very wise too because someone was able to change the game by trying to raise money to buy Bitcoin back. In my opinion it is a very good way and it is also not wrong if someone applies it all the time, because he has clear goals in his mission. The goal of trading is to make profits that can be used to buy better assets like Bitcoin, so there's clearly nothing out of the ordinary in that regard
I think the trading strategy may change depending on the unpredictable market conditions, if you aim to change the strategy for short-term trading because of the opportunity to profit from fluctuating market prices then we can take advantage of increasing the investment value to buy back bitcoins when the price is corrected, but the strategy will not be effective if the pattern of movement changes and the market price is not what you predicted, for example you have sold a price range of $35k increase but the price increased dramatically the following week, but you will hesitate to buy at the same price and wait for the price to drop lower to $30k-33k. I have implemented the DCA strategy for buying low prices to prioritize holding for the long term, I think holding bitcoin would be better if you commit to holding until the next ATH price.