Should've linked to the original in the commit message, but I still don't see evil intent there. That is just what happens if you are not careful, test things locally and when there is no proper PR - and you can't cherry-pick since it is from another repo.
Given that from what I see, this was intended to be a friendly cooperation, that shouldn't have been a problem.
I don't have a good overview, but there was some stripping of authorship of patches. E.g. https://github.com/gorhill/uBlock/issues/69