While there is a long history of reverse engineering isnt it equally likely that if you give two teams of engineers the same brief and the same computer simulation models they will come up with virtually the same design because in our data defined world that's what we should expect to happen.
Expect nobody did till SpaceX came along. Then up pop China with a look-alike.
Just hope SpaceX have been as forward thinking in their IT security as their rocket designs and the similarity is just skin deep.
If China’s work straight out of the box without repeating SpaceX’s crashes as they refined their designs and software I’ll be highly suspicious….