Kotlin

Python's accessibility flooded the market with junior developers, creating intense competition for entry-level roles. Companies migrate to Go or Kotlin for performance/type safety, and AI startups prefer Julia/Rust, leaving Python devs maintaining legacy models.

Accessing native APIs through platform channels requires knowledge of Kotlin/Swift/Objective-C. Specific features like Bluetooth LE, AR, biometrics, and native notifications either require unreliable third-party packages or custom implementation, reducing the efficiency of cross-platform development.