It is possible to equate both plagiarism and fraud to the same level of violation, but as the users answered above, plagiarism is provable, so strict rules apply to it.
But let's compare posts from ChatGPT. AI-generated posts are also the most common form of plagiarism, but the forum has not yet decided on the punishment or acceptance of such posts. Accordingly, if fraud takes time to detect, then some plagiarism methods also take time, and we can say that ChatGPT, that is, plagiarism, is also not moderated.