Mangus, 1st for most profiles that would be affected by your change, including the one I refer to, there are no templates on them. 2nd the profile you referenced has the father and his son born in the same State so it would not show as an error and is well within the status of probability.. I believe that citing a birth location as an error based only on the birth and death locations of the parents, is never a good idea without sources to say it is wrong. I have a close relationship with the family of the person I used as an example and can tell you that not all of the locations the father lived in are listed anywhere in the profile so even if the biography was read by a computer and included in the data dump there would be no reason from his profile to say that his child should have been born in Canada, but they were, and that is an actual fact.
Adding a category template for every location a person ever lived could result in a very large number of templates and an excessively long biography that adds no useful information except in very limited cases. Just for me alone I would have to have 13 locations listed for where I lived and only 2 would link to any useful information in my biography to date.