The Nigerian local board is very active and it seems to me that it has made the biggest progress in recent years If I remember correctly, you got a dedicated board only a few years ago. I was quite surprised when I saw quite a few well-known users writing there.
Recognizability is probably a sign of better quality posters and when we add to that merit source that maybe pushed the Nigerian local a little, it shouldn't be a surprise for a large number of merits there. It certainly doesn't look undeserved.