They also don't use TSMC's sub 10nm nodes. The whole point behind the effort of China and Russia is to have a CPU under their control, starting with the design

They also don't use TSMC's sub 10nm nodes. The whole point behind the effort of China and Russia is to have a CPU under their control, starting with the design but also including the manufacturing. And TSMC uses technology for their nodes which is not under their control at all. The amount of expertise China already has and will accumulate in the next decades should not be underestimated.