Godot Engine Bans AI-Generated Code Contributions

The open-source game engine is rejecting pull requests from developers who rely heavily on AI coding tools, citing maintainers' inability to verify whether contributors actually understand the code they're submitting. As maintainers face review burdens from low-quality patches they can't validate, projects are choosing explicit gatekeeping over absorbed costs. The threshold: when unpaid volunteers face liability for breakage, velocity becomes a liability.