According to @alice_und_bob, users on Hydration are paying transaction gas in USDT or other chosen assets, indicating multi-asset fee support within the Polkadot ecosystem (source: @alice_und_bob on X, August 12, 2025). According to @alice_und_bob, this design lets traders transact on Hydration without relying on a single native gas token by choosing USDT or other assets for fees, aligning with a user-focused Polkadot UX (source: @alice_und_bob on X, August 12, 2025).