what redundancy? A real redundancy is a third angle of attack sensor so the computer knows which ones to trust.If China didn't ground 737MAX, the US, the UK, Canada, and EASA would still allow the plane to fly. Just because the plane is clear by EASA and the US, it doesn't mean the plane is safe. And China doesn't need the US approval to export C919, not sure what Bloomberg is smoking.
The system has since been redesigned to prevent it from activating repeatedly and to add redundancy so that it’s less likely to malfunction, among other changes.