Also really difficult to do, with huge tradeoffs depending on whether the construction is 2-core, 4-core, interpoled 4-core, coreless, slot-wound, salient poles, and many more configs and winding types. In particular cheap salient-pole motors can be wound directly with automated machinery while better slot-wound motors need to have the coils formed first, then inserted into the rotor slots, which is a manual process and complicated further by the fact that the coils are skewed to minimize torque ripple, no-one's really managed to automate that process yet.
So if you saw a factory making a mixture of salient-pole motors for toys and slot-wound motors for serious use you'd see exactly what TFA is describing, salient-pole automated, slot-wound with human operators.
If you want to see what real highly-automated Chinese manufacturing is like, look at one of Bunny Huang's videos on electronics assembly. Then for contrast look at the videos of how it's done in Pakistan.