Let's be fair here, the issue with Taiwan is a geopolitical one. The same as it is with Israel and Palestine. And with many countries, territories, and borders, that are contested.
This isn't the same as the sheer ignorance it takes to assume that countries Nigeria, Montenegro, and Niger are connected to the US's issues with race and are therefore offensive. A US diplomat isn't going to sanction you for recognising Nigeria as a country. I'm also unaware of what such a person would call these countries instead.
Similarly, there are also countries that are "offensive" from a Chinese point of view.
This journalist cannot even mention the name "Taiwan" and "country" in the same sentence without this WHO guy (from Canada!) treating her like pariah.
https://www.youtube.com/watch?v=UlCYFh8U2xM