I can't speak to how effective this would be, necessarily but authors of syndicated content with an improper canonical attribution like this could always report the syndicated post (in this case, the FreeCodeCamp article) to Google as plagiarism. This might result in Google de-indexing of the plagiarized copy, especially if a lot of original authors do it in concert about a lot of posts.
It only takes a minute, so it might be worth a shot.
I can't speak to how effective this would be, necessarily but authors of syndicated content with an improper canonical attribution like this could always report the syndicated post (in this case, the FreeCodeCamp article) to Google as plagiarism. This might result in Google de-indexing of the plagiarized copy, especially if a lot of original authors do it in concert about a lot of posts.
It only takes a minute, so it might be worth a shot.
google.com/webmasters/tools/spamre...