I envy LLMs. Expressing ideas is a profound art, even native speakers struggle to articulate them perfectly. That's true for many people. LLMs (those with large parameters) can, however, articulate ideas clearly and confidently, even when they don't understand something at all.
Especially for foreign language beginners, the specific distribution of the learning material corpus makes them perform differently from when they speak their native language (with a uniform corpus distribution).
I feel.. the language itself is shaping one's personality. Like for bilinguals, they can have two slightly different personalities when speaking different languages.