Nitpicking: Andorra doesn't "pay tax to be autonomous" to Spain, nor to France for that matters. Andorra is the oldest country in Europe whose borders haven't changed since it was created (1278). It's a tiny country but it's a sovereign country. It has its own parliament and its official language (which is neither spanish nor french but catalan).
Andorrans pay less taxes because Andorra is autonomous.
San Marino is older, but I'm not sure if its borders have changed.
In the las regional elections party with the most votes was a non-independence party: Ciutadans.
In the last election, the parties with the most votes were PSC (23,04%), ERC(21,3%) and JxCat (20,04%). PSC is unionist, where ERC and JxCat are separatist. Ciutadans (radically unionist) merely got 5,57% of the votes.
You can check the results at https://www.lavanguardia.com/elecciones/autonomicas-cataluna... or https://resultados.elpais.com/elecciones/2021/autonomicas/09...
> Pro-independence parties gained a majority of the votes for the first time in an election and increased their parliamentary majority
You might be thinking about the 2017 election, but even then, the fact that Ciutadans had the most votes had to do with the pro-independence parties being split.
Just because you don't see the benefit of the language and culture of a distinct region being maintained by its own people, doesn't mean there isn't any.
The world would certainly be worse off if we lost all the diversity in it because people only see things in terms of investment/gain but are blind to the richness of allowing people to maintain their heritage.
Besides which the only part of the article that mentions taxes is when aomeone mentioned Andorra being an independent nation and paying less taxes to be autonomous than the people of Val d'Aran pay to Spain. Additionally Catalonia, where they speak Catalan, has been trying to separate from Spain. If anything, these languages are not in "life support" at the cost of all the citizens of the nation, they are actually paying more taxes due to being a part of said nation and have all the right to keep their language- especially so given the history of the region when it comes to their treatment by "the country as a whole".