Popular DeFi discussions from September 21, 2026 cover several topics: Billions Network CEO Evin McMullen will speak at the Global Blockchain Show in Abu Dhabi in December; a discussion on RWA (real-world assets) utilization in DeFi reveals only 12.7% of $33.15B in onchain RWA assets are actively used in DeFi, with platforms like Aave Horizon and Morpho Labs working to improve asset utility through lending and collateral mechanisms.