I don't see how this would actually help. If people don't want to disclose they used AI they will just strip the message from the commit.

Maybe those customers should just be more selective with the people they allow to contribute to their project?

Also, this kind of message doesn't even bring valuable info: it doesn't explain how the AI was used (could be 99% vibe-coding, or just a quick "Please review current changes" + minor fixes at the end?), which model was used, etc. Like other commenters here I can't see this as anything else than a marketing push for Copilot.

Don't take it personally though, you are probably not the one that should be taking the heat since the change was directly pushed by your product manager.