The title is a little misleading, this is happening in the state of Oaxaca only. I guess that if it works the government is going to try and implement it across the whole country.
Another issue here is the phrase "moving to". That's not the same thing as actually doing it, and frequently the processes that articles like this are describing end up outputting to /dev/null.
[1] https://www.milenio.com/estados/comida-chatarra-tabasco-proh...