Some approaches to the problem:
- Wikipedia is not a valid source for this issue. In addition, its license is not compatible with OSM, so it cannot be used. Therefore, if your only source is Wikipedia, I’m sorry…
- As aTarom rightly says, if you look at any of the Spanish versions of the websites of these municipalities or media outlets, you will see what the toponym in use is.
- If you go to these locations (remember that OSM maps reality, not what each person has in their head, but what actually exists on the ground), you will not see any of these supposed names that only existed for a short period in history. There are no political motivations, only an attempt to reflect the reality today.
- The Spanish National Geographic Institute (IGN), with all its documentation written in Spanish, does not list any of these names. Go to their website and check it out.
- The “political persecution” is of such magnitude (allow me to be ironic) that a search on Overpass in Galicia yields these results for name:es: “Mostrado - pdis: 1808, lines: 7490, polygons: 2336”. The provincial capitals of Galicia with names in Spanish still in use (although limited) have their name:es tag. But in little towns and villages, this has never, or almost never, been the case. In this regard, I think this article may be useful: As grafías tradicionais do topónimo 'Sanxenxo' | Real Academia Galega (sorry, it’s in Galician).
- These toponyms were once in use, but now they are in full retreat and you will not see any of them on the ground. In spoken language, some people may still use them, but I don’t think this needs to be represented in OSM. There is no document that shows it except for the ideas held by a few.
- Now a little history: the account that has originated all this controversy is creating discord and confrontations in the Spanish community for at least two years. Notice that they raised the issue in Help and Support, and not in the section of the local community itself: why? Because everyone there already knows their manipulations. In recent days, they have been sending personal messages to several members of the community to try to influence them, and in one case they succeeded. After talking to this user, who made some incorrect changes, they agreed to revert their changes. Over time, they have created at least a dozen accounts, solely to continue with their obsession of including names that no longer exist and that very few people use.
- I am also sorry for users whom I respect for their work, but the RAE is a Royal Academy of Language, it does not know about cartography or its use in the language, nor does it have capabilities on the subject (I won’t list all the controversies in which the Academy has been involved), and its pronouncements should be applied to its field, not to this one.
- And, I apologize to other user communities in Spain, such as the Catalan or Valencian, but I do not see this obsession in these users to use the supposed Spanish names that are also listed on Wikipedia in these areas.
- One last thing: if the community says otherwise, I have no problem accepting it. This user has never been, in their multiple personalities, in contact with the community, has always tried to do their will, and has never responded to a message except with insults and threats.