The overall goal of the fund is to achieve 80% of Bitcoin's returns while minimizing BTC's losses to ~30%. To accomplish that goal, the algorithm for the portfolio monitors the market constantly to look for long-term uptrends and downtrends.
When an uptrend is detected, the portfolio will rebalance into BTC. When a downtrend is detected, the Bitcoin Defense will rebalance into a stablecoin. The Bitcoin Defense was designed to be invested in for 3-5 years and should have better risk-adjusted returns than simply holding Bitcoin.
With the Bitcoin Defense, it's really important to remember that it should be a smaller portion of a larger diversified crypto portfolio and that it does take time to truly outperform Bitcoin.