I think this is vastly underestimating what "catching up" means. All my life, people have been saying "China copies". Now they are objectively better at many things (including robotics), and... well it seems that we cannot "just copy".
I saw western companies trying to "copy" superior Chinese technology, talking to brilliant engineers explaining how much they were learning by actually trying to copy.
The lesson I got from that is that China did not "copy"; they learned. And it took time, and now they are better. Now the western world has to learn from them, I guess.