I don't see why not. Having one thread for everything seems counter-productive. I mean, the Dutch have their own subforum and every single one of us is able to speak English, but that doesn't mean we always want to.
I would support a new subsection for the Phillippines if their forum presence is significant enough to warrant it but looking at the other stats I'm not fully convinced.
Well, I was bored so here's the math.
The past 7 days (little over by a few hours, +~12).
140 posts, 20 unique users, average of 20 posts a day.
10 users posted 3 times or less.
Top 5 posters account for 95 of 140 posts, top 3 account for 72.
An entire new section is probably not needed yet.