Oh, silly me, I forgot that we frequently characterise the US by their 1960s era submarine program safety standards. My mistake. </sarcasm> I don't really know what response you expected, but one Wikipedia link to one program doesn't say a thing. It certainly doesn't sum up the US, who are famous for their huge fireballs and endless disasters - sometimes intentional, sometimes unintentional.
1. We don't know how the outcomes compare to the Chinese standards or if the difference is significant.
2. The US has a third of a billion people and the largest military budget. China has a billion people and the world's largest military if I recall correctly. There will be pockets of excellence in both. One example isn't anywhere near enough.
3. Before SUBSAFE they had a terrible record of unsafe subs, that is why they bought in the program. That is part of learning and it'll go the same way for the Chinese with their rocket programs - losing these things is expensive and everyone figures that out fairly quickly.