I dont think many people write in chats outside EN.
In the german global there are sometimes 2 or 3 people chatting a bit, but 99% of the time there is nobody.
And I can count on one hand how many times i saw a post in the DE trade chat in the 2,5k hours im here.
We prefer using the english chats.
Maybe it is like this just in DE, but i guess thats the same for most countries (except chinese i guess)