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".
If there was a 'coverup' it was by local municipal authorities which should not be conflated with central govt. Even if true, the actual reporting of first case was only delayed by 1 week with the genome sequenced shared w/WHO rest of world less 2wks later.