The existence of other frameworks of morality doesn't mean that there isn't one True Morality. It just means that some people act against it.
Probably not, because anything human will only be an approximation. It's probably a whole damn closer than the Chinese morality though.
> To suggest that there's somehow a single philosophy that's correct is quite pompous. Why? In science we accept that there's one true way that any process can be described. Others might be entirely wrong (theory of Humors), or partially wrong, but useful (Newtonian physics). Why is the notion that there's on true moral framework so outlandish?
It's not pompous, it's reasonable, as in it's a deduction that anyone can make for themselves with the reason they have, applied to the vessel they were born with.
Meanwhile it's undeniable that Taoism is a major cultural cornerstone of China and very much affects how the state and its population are related. Thus "Moral relativism is a cancer, applied selectively by the lazy. Do better." is actually quite an ignorant statement that applies a specific moral lens to the entire world without acknowledging the lack of universality in ideals across humanity.