Google has clearly stated that, "appropriate use of AI or automation is not against our guidelines. This means that it is not used to generate content primarily to manipulate search rankings, which is against our spam policies." From an SEO perspective, Google has sent a clear signal that you're safe to use AI writing tools to assist in your content creation process without fear of being punished by their algorithms. That said, I wouldn't recommend using an article rewriter (or article spinner as they're also called) to do something as brazen as copy a competitor's article, use an article rewriter tool to just reword it in one click, then hit publish. In my book, that's a form of plagiarism—but more than anything else, it's disrespectful of the creative effort bloggers put into their content writing.