There's an obvious advantage to everyone speaking the same language - although perhaps real-time translation with LLMs and hardware like the Timekettle will reduce this problem. Personally, I wouldn't really care if that language were English or Mandarin Chinese tbh.

Training an entire LLM model for each language is going to be incredibly expensive and likely a waste of resources. Keep in mind that all the big LLMs can already speak these languages anyway - this effort is just to make a 'pure' Portuguese LLM.

>and go full on english ?

Nobody is saying you have to swap your culture for English. You can have English as the mandatory language for tech and business across the EU, while still keeping your language and culture for your education, leisure, festivities, art, media, etc. This way everyone is happy. But countries like France would rather detonate its entire nuclear arsenal rather than accepting official use of English on its own soil.

As long as resources are spent across the EU to account for every language and bureaucracy, we'll keep falling behind internationally, and the only winners will be the bureaucrats, notaries, lawyers, consultants, translators, etc. which would be fine if this were preserving culture like you said in the beginning, but it isn't, it's just preserving friction, segmentation and bureaucracy.

We need another Concord moment. What's wild is that Concord was made via international cooperation, before the EU was even a thing. So whatever the EU is doing to improve things, it's either not good, not enough, or not working. I hope this improves but knowing how petty some EU states are about things being done their way, I doubt it.