According to Cas Abbé on Twitter, CoinMarketCap data shows that over 10% of active cryptocurrencies have vanished or been delisted in the past two months, signaling a significant shakeup in the altcoin market. This rapid decline is primarily due to failed projects and increased market scrutiny, leading to tighter listing requirements and lower tolerance for inactive or non-compliant coins (source: CoinMarketCap via @cas_abbe). For crypto traders, this trend highlights the growing need to focus on high-liquidity assets and robust project fundamentals, as riskier altcoins face heightened delisting risk and potential liquidity crunches. Monitoring coin listings and delistings is now more crucial for altcoin portfolio management and risk assessment.