When the market crashes, the price of USDC against USDT will be driven up, directly raising it to 1.0012 at 4.7, which allows BTC/USDC to drop more sharply than BTC/USDT.
When the market rallies, the price of USDC against USDT will be driven down, and now the price of USDC is only 0.9992 USDT, which allows BTC/USDC to rise more aggressively than BTC/USDT.
If USDC is directly raised to 1.0012 at 4.7 now, Bitcoin could drop two hundred points without reason. But the fact is that the manipulators have created pressure, squeezing out 200 points of gaming space for all players shorting BTC/USDC contracts.
No transaction fees are just bait; there are many ways to take you down.