In certain law cases plagiarization can be influenced by the fact if person is exposed to the copyrighted work. AI models are exposed to very large corpus of works..
Copyright infringement and plagiarism are not the same or even very closely related. They're different concepts and not interchangeable. Relative to copyright infringement, cases of plagiarism are rarely a matter for courts to decide or care about at all. Plagiarism is primarily an ethical (and not civil or criminal) matter. Rather than be dealt with by the legal system, it is the subject of codes of ethics within e.g. academia, journalism, etc. which have their own extra-judicial standards and methods of enforcement.
Copyright infringement and plagiarism are not the same or even very closely related. They're different concepts and not interchangeable. Relative to copyright infringement, cases of plagiarism are rarely a matter for courts to decide or care about at all. Plagiarism is primarily an ethical (and not civil or criminal) matter. Rather than be dealt with by the legal system, it is the subject of codes of ethics within e.g. academia, journalism, etc. which have their own extra-judicial standards and methods of enforcement.