Blockchain investigator ZachXBT questions the legitimacy of Cardano (ADA) and XRP due to their lack of stablecoin issuers.ADA and XRP enthusiasts defend their ecosystems against the criticism, citing specific hurdles and recent developments.Former President Donald Trump's proposal for a national crypto reserve sparks debate on its viability and asset selection process.The discussions around ADA, XRP, and Trump's proposal highlight the ongoing debate on crypto legitimacy and widespread adoption.