Cryptocurrency airdrops have been a hot topic in the crypto space for years, with many investors hoping to score big gains by receiving free tokens. However, the dynamics of airdrops have evolved significantly over time. In the past, airdrops based on testnets like Optimism and Arbitrum (Aptos) provided massive gains to early participants. Yet, the landscape has changed, and the days of easy gains from testnet airdrops may be coming to an end. This article explores the reasons behind this shi...