GitHub opts all CLI users into telemetry collection whether they want it or not

GitHub has quietly enabled default pseudonymous telemetry collection in its CLI tool, justifying it as necessary to understand feature usage and support AI agent adoption. The rollout lacked prominent announcement or detailed disclosure of what data is collected. Users must actively opt-out via environment variables (GH_TELEMETRY=false, DO_NOT_TRACK=true) or CLI configuration commands.