Wrote someone parading their ignorance of what plagiarism is and who does not work under ethical directives about plagiarism in the day to day.
Plagiarism ≠ copyright infringement. Plagiarism is not about who owns a text or cultural artifact.
Plagiarism is about honest attribution as to the author(s) of a text or cultural artifact, including whether such a text or artifact is being reproduced in whole, in part, paraphrased or adapated, or is being used in full synthesis.
Mary is plagiarizing because she is hiding the true author and origin of a text.
This is not even a borderline case of plagiarism, it is plagiarism front and center, full stop.
