Exactly. After testing Copilot myself[0], I can see that the copy/pasted code is changed enough (by using variable and function names from your prompts or context) that no court would ever decide that you had infringed.

JavaScript and other languages aren't copyrightable by themselves. It's not illegal nor immoral to observe others' code and write something orthogonal in the same language.

[0] https://levelup.gitconnected.com/flying-with-github-copilot-...