To be honest - I see many Indonesian members prefer to interact on the global side rather than on the local side. .
ok i know i haven't made any contribution in forum but of course i very happy and excited to show my knowledge about bitcoin,, after someone +1 for my journey in global section. .
Well, to be honest, if you want to have a high level discussion about any subject related to computer science, coding, new technology, etc you must be able to speak English, because all high level discussion happen in English.
As the best discussions are in English, it is natural that most merits will flow to the global forum.
In addition, as far as I managed to notice during the time I was on the forum, the activity in local boards is often lower, since they are rarely been visited. For example, in my board (Ukrainian), new posts appear every 1-2 days. Respectively, even if you wrote a good post, it should take some time until someone notices it. In general discussions, there are more chances to draw someone's attention to your post, since many more participants are concentrated there.