If I understand your argument correctly, it's that GitHub Copilot does not produce functioning code, yes?
If that's the case, I agree with your assessment, that GitHub Copilot isn't delivering on its promise and I would not be using it.
My understanding, however, was the GitHub Copilot does produce functioning code. If you're saying, as I think you are, "No, GitHub is lying about Copilot." I find that claim fascinating (How the hell did we get to the point where a software company could release a product that literally does not do even the most basic version of what it says it does, and only a few people notice?), but I'd need more specific information from you before I'd believe it.
If that's the case, I agree with your assessment, that GitHub Copilot isn't delivering on its promise and I would not be using it.
My understanding, however, was the GitHub Copilot does produce functioning code. If you're saying, as I think you are, "No, GitHub is lying about Copilot." I find that claim fascinating (How the hell did we get to the point where a software company could release a product that literally does not do even the most basic version of what it says it does, and only a few people notice?), but I'd need more specific information from you before I'd believe it.