that sounds like a bug to me. Chat channels might be region based, but language based? Citation needed on that. Make a video of you trying to join a channel with someone shown to have a different language setting.
I don’t think it’s particularly more or less pleasant. If it’s less, it’s because of changes in the community, not the chat feature itself.
Furthermore, the chat in reforged doesn’t follow the new lines said
It does for me normally, there may be bugs with it, but it certainly is capable of doing so. Bugs can be fixed.
You can click a button to make the chat take the whole screen. While I’d prefer being able to freely change the size, it can be as important as you want it to be. But I think this is more just changing player tendencies I don’t think people chat in games as much as they used to.