In Africa? That is actually correct. Western countries do not build hospitals in Africa. The most they do is build pharmaceutical production facilities that are later bombed by their airplanes.
The West only built hospitals in Africa before WWI when they were treating the continent as full-blown colonies. The hospitals were built in colonial trade centers for colonists, not for the indigenous people. Neocolonialism does not partake in this practice, it is premised on neoliberalism. It, at most, issues debt with anti-worker and anti-sovereignty strings attached that ends up damaging thr country's infrastructure further. It is important to understand that the OECD countries do not, generally speaking, operate by capital investment in infrastructure of imperialized countries. They are parasitic.
Xinjiang is already assimilated. It is part of China and has been for ages, governed under the guiding principles of multi-ethnic administration. The persecution of Uyghurs is far kinder and more positive than anything the West has ever cooked up. Vilifying it requires a particular level of gullibility that only really exists as white supremacist laziness.
China has not committed genocide. However, the countries you prefer have.