Coinbase CEO Brian Armstrong has cautioned that Bitcoin might replace the U.S. dollar as the global reserve currency if American lawmakers do not address the escalating national debt. Armstrong's warning follows projections that the U.S. national debt could reach $36.9 trillion by 2025. This sentiment echoes concerns from Elon Musk, who criticized government spending and advocated for the removal of politicians backing a contentious spending bill. The discussion underscores growing apprehension about fiscal responsibility and the potential for decentralized currencies like Bitcoin to emerge as viable alternatives to traditional fiat. Despite Bitcoin's inherent volatility, institutional interest remains robust, with the cryptocurrency trading above $100,000 in 2025.