When you obtain one-way links as well as immediate visitors, you should properly address your document for it to be optimized well. Otherwise, the publication address for your target article may be confused and lost along the way. Extending your document is usually republished. There is a tendency that the WordAI can lose the article you are writing.
By now, most people in the SEO industry are more than familiar with the various animal named updates that have made it nearly impossible to rank without high-quality content. One of the most famous ones is Google Panda, which directly targets on-site content quality and severely penalizes sites that have spelling and stylistic errors or were not edited well.
Imo it is not possible for google to detect properly spun content, it is not worth computing power it requires. They can do this using ngrams for example, but it is uses a lot of queries. And for example article spinner I coded beats this algo, so google cant detect that the content is spun. Manual spinning is also good but it takes more than 30 minutes per article.