According to @Excellion, Bitcoin Core is trying to prevent private mempools, has removed OP_RETURN limits, and this is driving thousands of users toward Bitcoin Knots while compact block relay breaks, accelerating a shift to private mempools, source: X/@Excellion on Sep 22, 2025. For traders, increased use of private mempools reduces mempool overlap and can impair BIP152 compact block efficiency, potentially increasing relay bandwidth needs and confirmation latency during volatility, source: BIP152 Compact Block Relay (Bitcoin Core specification). BTC traders should monitor on-chain feerate distributions, compact block reconstruction success on nodes, and client share between Bitcoin Core and Bitcoin Knots as early indicators of fee pressure and settlement delays, source: Bitcoin Core and Bitcoin Knots documentation and network policy references; X/@Excellion.