Recently, I've had a sudden thought: using double leverage actually still carries risk, because you can't judge whether the market will intentionally drop 50% quickly or gradually drop 70%. Then, after a long period of dry market conditions, it forces all conservative bulls to exit, or a brutal shakeout makes you afraid to enter. Even if your leverage is very low and you won't face liquidation, for example, using 40% position at 2x is actually equivalent to spot trading, and there are no fees for this part over a long time.

If the contract uses low leverage, it can only be after bloodshed, like 312, using very low leverage (at most full position at 2x), otherwise, it just looks good on paper and offers no real advantage. For experts, high-leverage tools exist, but the risk is also very high, and it's actually unnecessary.

If you want to pump the market, you can actually earn a lot with spot trading. If you don't pump the market, spot trading can also hedge against risks, as long as you avoid chasing highs, it's all very good.