> There are 1.5m of these things in GitHub.

You’re pointing to something entirely different: those are Copilot-created PRs. They can include anything Copilot wants to include. People using the Copilot PR feature know what they’re buying into.

OP is about Copilot doing post-hoc editing of a human-created PR to include an ad, allegedly without knowledge or approval of the creator (well I assume they did give their team member permission to update the PR body, but apparently not for this kind of crap).