GitHub data suggests the blockchain ecosystem has seen broad developer attrition since early 2025, with weekly commits across crypto projects falling from about 850,000 to roughly 210,000 and active developers dropping to around 4,600. Developer activity across major ecosystems such as Ethereum, Solana, and Base has declined, with Aptos down about 60% and BNB Chain commits down about 85%, while wallet infrastructure is the only segment showing slight growth.