It really is though. If you're going to experiment with viruses that can be lethal to humans, you'd better have a damn good set of safety protocols so they don't get out. If you can't do that, don't experiment on the viruses. Given the infectiousness, there are even theories they were experimenting with making it more virulent.
There are almost 3,000,000 deaths globally. That's equivalent to launching a Little Boy at a city the size of Hiroshima every day for 42 days. It's a third of the number of soldiers who died in WW1.
There is no conceivable way that this could be declared an "oopsie" moment. This is a colossal fuck up, even by international scales.
It has nothing to do with it specifically being China. If it was the EU, I'd be pissed at them too. Lab leaks aren't particularly uncommon, which is a problem basically everywhere. I'm concerned that Russia is allegedly messing around with anthrax, but at least they seem to be able to keep it in their labs. I would prefer that no-one in the world was working on biological weapons, but I think that's a pipedream.