> Most LLMs focus on the English, German, French and Chinese languages, but everything else is... left behind at best.
that is not true, so please read before make an opinion. The French Mistral project shipped seven+ years ago with 140 languages for example.. language translation was the first LLM task from 2015
One example is not the same as "most LLMs". My experience is the same with most LLMs. Especially the smaller ones are English oriented (probably makes sense given the size constraints).