Thank you for you comment @mawit07.
Concerning 1) I also agree that I didn't see a lot of US communities, I also find this quite weird.
Concerning your 2); It is definitely overstated and I wish there was a way to know exactly the number of users are even "unique visitors" does not mean different people.

I do not believe these numbers take bots into account. They should not be part of these metrics.

Take care my dear.