"Hello, I am the CEO of a company located in a fully autonomous province that does not pay taxes to the PRC?"
What security interest is served by censoring discussion of the existence of Taiwan?
This is a political issue, not a security issue.
Taiwan is clearly sovereign, anyone saying otherwise is ignoring reality or avoiding offending China.
The US had military bases in Taiwan for 20 years, the military bases were removed to assist with normalizing relations with China.
I can absolutely see why insisting that the US not place military bases on Taiwan is a security concern, but this has nothing to do with the sovereignty of Taiwan. (Similar to US concerns about Russian military installationa in Cuba which were unrelated to Cuba's sovereignty.)
The institutional double-speak around the sovereignty of Taiwan is purely political and has no impact on actual security issues.