They should be a lot less aggressive and assertive about it, but, given the stakes nd the history I think the polite fiction is perfectly fine compared to lots of alternatives.
It's better than a lot of alternatives, but it is not "perfectly fine". It's about much more than word usage for China, and they will exploit every inch given to them on this matter until they have occupied Taiwan.
If we use HK as the model for how Taiwan will be occupied, then it seems that it will be through political process. I’m not sure if the Taiwanese system is as weak as the HK setup was, but if anybody is able to find a hole, it would be the CCP.