There’s a difference. Chernobyl happened, and once the reactor went critical, it couldn’t have been stopped. Although, the Russians could have been a lot more honest about it up front. But, that wouldn’t have stopped the radiation plume once the reactor core started to melt.
China could have given the world a few weeks to a months warning and restricted travel, or recommended such. And they didn’t.
It would be comparable if the Soviet’s found a way to stop the radiation from spreading to most Russia and let it hit the rest of the world
China owns this CV-19 train wreck.
and
China should pay for their bad act.