My own experience: Don't ever trust the Chinese government on issues that could potentially involve the reputation of the party. Note that I'm not saying don't trust what CCP says, ever (sometimes they actually do good things) - just not on issues that involve anything to do with how the world might perceive them.
Which is exactly what this issue is about.
That's not to say we have compelling evidence that this was a lab virus, either. I think, for me, it's a, "we don't know, but I wouldn't be shocked at all if it was a lab virus".
To me, the only constructive discussion that can be had at this point needs to be around actual evidence, and not the absence of it. The first documented cases, first traces of positive samples etc etc. It's clearly still in the early stages of discoveries so all theories are just theories. That said I don't expect this to remain a mystery forever. It will just take time, because eventually the natural origins will be pinned down and reasonable chain of events of first spread will be identified.
They can probably start by capping payments from any one country as to minimize the effects of soft power.
An under-funded WHO is better than a biased WHO.
On the other hand, the WHO after the pandemic had clearly emerged continued to appear biased, seriously damaging its reputation.