Think of it this way: What do you have more chance of hitting, a distant, tiny target or the broad side of a barn? For the sake of search engine optimization, you want your website to be the broad side of barn. The more quality articles, or unique readable content, your website or blog offers to search engines (and therefore the general public) the more exposure your website will receive from major search engines.
I am extraordinarily dissatisfied with WordAI. They are happy to take your money – we spent a good chunk of coin, but also sent in two support requests that were never answered. In the end, we told them that we had to like their AI and their humans before we’d continue trying their service, so this article, which is a great analysis of the products shows that there are other spin services our there and we will definitely be trying out the competition.