The bottom line is local board only help members earn merit easier.
Nope, generalization. Some boards do have high merit/post ratio, while others are struggling. My local board (Croatian) struggled a lot until this recent increase in merit sources, with our merit/post average being lower than many English boards.
Without local boards, they can discuss well in English, in international boards so to be honest, in most of cases, local boards are used not because of limitations in English.
This forum would be way less active if there are no local boards so I think that they are great addition. What you obviously fail to understand is that is perfectly normal for people to be more relaxed communicating in their own language, even if they are fluent in English. To be honest, its kinda weird hearing this from you...somehow I thought that you are proponent of local boards.
I can bet that the average quality of posts that received merit would be lower than merited English posts.
Again generalization. While it's true that some local boards have more merit sources and its easier to get merit, same goes for English speaking boards.
Chinese aren't included
Rikafip explained the reason for that several times. During most months, more posts get deleted in the Chinese board than new ones are written. That results in a negative post count at the end. Looking at previous months, the last (and maybe only time) it was included was in
March 2021. It would look silly to have look at the charts and see a local community who has written -27 posts, for example.
Yep, that was situation up until now and the reason why Chinese board was mostly left out of charts. But since I started using ninjastic.space for Russian board, it is logical to expand it for others too so Chinese will most likely be included in the next month's overview.