Thank you for your comment dear @fitinfun! I'm sorry for such a late reply, but I were on holidays and had very limited access to Internet.
I mostly work on steem and don't think there is too much of it here.
That's right, but we need to consider the fact that AI generated text is currently on a very basic level. Additionally, such programs are usually not open source (people do not have access to the code), so you would need to be really advanced at machine learning (probably on an academic level) to develop something like that on your own. But when this technology gets more adoption and programmers with basics skills will be able to use it, they may use it in a wrong way