Algerian Arabic in Tunisia

Why does the map show the whole of Tunisia? ( https://www.ethnologue.com/language/arq/map )

According to your guidelines (https://www.ethnologue.com/about/language-maps ):

"we typically use the convention of showing a language in an area if at least 25% of the population in that area speak the language fluently as an L1. However, a minority language may be shown on a map even if the speakers do not comprise more than 25% of the population in any given area. This exception is made when the minority language is indigenous to that area only or, when there is historical significance for the language in that region. An exception may also be made for an immigrant language when the speakers are confined to a specific region and we desire to show the approximate extent of their locations."

Same issue with France and other European countries.