I'm having a hard time buying that people are genuinely worried about their code being copied without proper attribution. While it is possible for CoPilot to generate copyrighted code, this typically occurs only under intentional efforts and only for a few lines of code. It's just not an actual issue.

And something tells me that even if CoPilot would be entirely prevented from doing that, they would still not be happy about CoPilot using their code for training. The copyright issue is just a convenient pretext.