According to Miles Deutscher, the primary factor that distinguishes a successful altcoin from a failed investment is strong token utility and real user adoption (source: @milesdeutscher, Twitter, May 9, 2025). Altcoins that demonstrate clear use cases and actual demand are more likely to sustain growth and avoid rapid declines. Traders should closely evaluate on-chain activity, user engagement, and ecosystem development as concrete indicators of potential outperformance in the altcoin market. Monitoring these metrics can help identify promising projects and reduce risk of holding underperforming tokens.