Coinbase Commerce has announced it will no longer accept external crypto payments, specifically discontinuing support for Bitcoin and other Unspent Transaction Output (UTXO) coins for merchant payments unless customers have an existing Coinbase account. This move necessitates users to undergo ID verification and allows Coinbase to custody funds. Critics argue this undermines the decentralized ethos of cryptocurrency, emphasizing that it contradicts the principle of external crypto payments. The decision has sparked backlash, with some citing Bitcoin's technology and the Lightning network's poor user experience. Brian Armstrong's tweet about the poor user experience with L1 BTC payments has also been highlighted, affecting some of the largest BTC merchants.