(HN doesn't want me to continue with this nonsense deeper, so adding here). Just to note, it is not only grammar books, there are several papers about it as wel

(HN doesn't want me to continue with this nonsense deeper, so adding here). Just to note, it is not only grammar books, there are several papers about it as well, you could see it if you actually bothered understanding the nuances of it. So I am wondering are you an expert in linguistics and Turkic languages? Do you have a real source that supports your thesis? My guess is you are not, so indeed there is no need for further discussion.