You are doing DCA, which is short-term strategy which help traders to Dollar cost averaging, lower the amount you use to pay for investments as well as it having minimum risk.
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If you're referring to the OP, I don't think it's exactly a DCA strategy. Yes, there are many people who trade Bitcoin using a similar approach to his. But, this is often referred to as "buy and hold" investing. The idea is that Bitcoin is a long-term investment, and that it is more likely to go up in value over time than it is to go down to zero.