It prints this code because you have it open in another editor tab. Wish people who don't know at all how it works stopped acting all outraged when they're laughably wrong.
> OpenAI Codex was trained on publicly available source code and natural language, so it works for both programming and human languages. The GitHub Copilot extension sends your comments and code to the GitHub Copilot service, and it relies on context, as described in Privacy below - i.e., file content both in the file you are editing, as well as neighboring or related files within a project. It may also collect the URLs of repositories or file paths to identify relevant context. The comments and code along with context are then used by OpenAI Codex to synthesize and suggest individual lines and whole functions.
Depending on your preferred telemetry settings, GitHub Copilot may also collect and retain the following, collectively referred to as “code snippets”: source code that you are editing, related files and other files open in the same IDE or editor, URLs of repositories and files paths.