Sure, they can make a bold impassioned speech about how science is far beyond petty concerns like national sovereignty and so on, but this isn't a movie where a great speech suddenly brings everyone to their senses. In reality the WHO works through public health departments in nearly 200 countries and also gets its funding from governments, so if they spit int he face of sovereignty, they'll cease to exist in any meaningful way and aggregate health outcomes will definitely be worse.
I didn't say organisations can or should ignore politics - of course, politics affect every organisation, especially those that work across borders.
My entire comment was about the childish behaviour of the WHO represenatative when asked about Taiwan[0] - he was literally one step away from putting his fingers in his ears and shouting "na na na na na!".