Doesn't matter how many comments, messages, etc. he repeatedly unstandardizes the places. It's been going on for about 3 months.
Please post a couple of examples of this.
It would be nice if people communicated better. I suspect he is adding appropriate complete place names and is getting annoyed that you are removing information to make a place name match an incomplete "standard." But until you provide an example, that is just a guess based on the fact that is it kind of hard to completely remove a linked standard and there is no reason to do do.
These were all standardized days ago.
I have standardized this person's places several times and he comes back and unstandardizes them.
Even when I comment that Ste. Genevieve is not in Washington County, Missouri, he continues to change it back. https://www.familysearch.org/tree/person/changelog/K23V-F5Q/birth
Standardized locations are about coordinates not historical names. My issue is that he is purposely unstandardizing.
Interesting debate the two of you have been having. Again, I have to say it really is too bad that he is not communicating back to you. I would guess from the change log that he is not purposely removing the standard, but rather that he is just clicking "Restore" in the change log to return it to the value he originally put in. It looks like the real debate in his mind is over whether it should have a county name or not.
Checking the map, it is certainly is not in Washington county. Since it is not, that is why he can't have a standard linked.
Unfortunately, if he won't answer you, the only thing you can do is keeping correcting the error with stronger and stronger, but still polite, reason statements such as including the link to the very thorough Wikipedia page on Ste. Genevieve and it's history. You could through the message system send him a URL to a map of Missouri that shows where Washington county is and where Ste. Genevieve is. Maybe that would convince him.
Good luck with your continued efforts.