It has its quiet moments and its busy periods. Many people use it solely to study and not to talk (or if they do its user to user). Check the daily rankings to see how many normally take tests or practice to get an idea.
But it seems like the quite ones prevail because when I take a look at the date of replies to forum topics or groups I see that they need some time for their conversations
maybe everyone is avoiding distraction and actually studying lol I always get caught up with the extras of language sites and end up barely practising ^~^