So, even with 0.2U, we must insist on holding USUAL and staking?

The price of usual $USUAL does not need to be overly concerned about. We can only wait for usualx to reduce usual, in order to stop the usual price from falling. Because the market does not want usual to rise, as it would harm the interests of other stablecoins.
If I were another stablecoin, I would also stake usualx to earn usd0, and then continuously sell usual to push down the price, forcing retail investors out. With the popularity of usual declining, it will naturally be eliminated.