It's not my area but, surely concurrency can be added, and why does it need to be native? Surely a library is fine. (I chose not to learn go because of it's la

It's not my area but, surely concurrency can be added, and why does it need to be native? Surely a library is fine. (I chose not to learn go because of it's lack of generics and exceptions. It seemed like a huge step backwards)