Well you are wrong I haven't seen any mod banning someone just because of its bad English they usually delete the message if it makes 0 sense but if the English is messy but conveys the message and understandable it is acceptable, here you can try yourself.
Secondly, They have introduced the local boards so we can talk about it in our own language we have a lot of great experienced people hanging around that's the reason behind it. I have seen many people just don't come for chit-chat and usually replies if they see a genuine question here.
Trust me I have seen and faced such kind of harassment many times... yeah agree not from moderators or staff but from many high ranking profiles.
As for as local boards are concerned we merely have a thread... if we see Indian board they have 8 sub boards too. Our people have interest in crypto but just to make easy money nothing more. I wish we could have more healthy discussion and show some real talent here.