Individual wind turbines aren’t very big, solar panels get laughably small, and while they are not efficient at their small form factors they are very easy to scale up and down. Nuclear is the exact opposite, representing a very large single point of failure, and even under pre-renewables hard to absorb; some of the first pumped hydro was developed to take excess nuclear capacity because it cannot scale up or down very easily.
You are right that China has structural advantages when it comes to building nuclear, and they are making use of them.
By 2030 there is 110GW planned of nuclear and 2800GW of solar and wind.
Without price anderson act dumping the liability on to taxpayers nobody would build nuclear reactors even at the cost they are.
Unfortunate, but that's the way the cookie crumbles.