The US should use its own primary sources in future to evaluate disease spread. China will lie to the WHO and the WHO will protect it.
But to know the truth, we should use our modern equivalents of Key Hole. There is no truth but that which you have examined yourself.
The WHO is a forum to coordinate strategy and exchange information. Obviously, this requires a minimum of good faith, which seems to be difficult for some countries (yes, particularly dictatorships). But even then, it is better to have them within, collaborating on their terms, than to leave them outside, in which case it would be even harder to get any information out of them.
So yes, China will lie, which will make life worse for epidemiologists and governments across the globe, but not as worse as it could be with China being entirely uncooperative.
It is not the world police, and it won’t come anywhere and do anything against the local government’s wishes. Otherwise the screams world be even louder, and justifiably so.
Before the pandemic, I thought the WHO was a relatively capable organization. But from what I witnessed they just seem like a prestige farm used as a stepping stone to more lucrative careers.