Which is perfectly reasonable if you understand that these questions are looked at through the lens of international diplomacy and these people don't just wing geopolitical questions because every single answer can cause an international shitstorm (not just in regards to China, but every territorial conflict really). This may look awkward to the ordinary viewer but it's not really.

The WHO has a fairly strong interest in staying out of politics and being a health organisation, so whatever diplomatic position they take is mostly just going to be whatever the status quo is. If you think the non-recognition of Taiwan is unethical then you should take that up with your respective government, a guy speaking for the WHO isn't really in any position to make incindiary political commentary.