With the recent consecutive USR and Drift incidents, and frequent backlashes from Base, BP, and Edge, the market is shrinking significantly.
While interest rates are being offered at a loss, DeFi yields still exist.
Perhaps because many people have adopted a "it's dangerous outside the blankets" mindset and decided it is better to profit even from a 5-6% return on USD1, the USD1 is holding its ground above the dollar level.