The environment collapsing so that it can’t support people is a pretty drastic leap from running certain fish into extinction.
My suspicion is that the CCP has no real effort or interest and the lack of people able to answer with a: Yes the CCP is seriously trying to protect the environment/ecosystem/species through the following things likely speaks to the lack of interest/initiative.
The CCP cares about the environment insofar as it benefits China. They probably do not care about a fish going extinct the way we do.
PRC does not deny they exist, nor denies that organs are harvested after. There are pictures of them online, and notable cases where it was the officially recorded method of execution.
The first ever mobile lethal injection van was actually, as far I know, from Delaware in 1986 : http://www.doc.delaware.gov/deathrow/history.shtml [1]
Beyond lethal injection vans, around a half dozen countries also employed gas chamber vans, with the first known example being in Nazi Germany.
[1] For some reason Wikipedians came to a consensus that only Chinese execution vans should be mentioned in the article titled "Execution vans".
I used to not really notice it because I actually agreed with the ideological slant of Wikipedia, but contact with other, non-English Wikipedias has seriously forced me to reconsider and now I don't trust any Wikipedia on politically charged content.
And yeah, in my mind Wikipedia has fallen from what it promised to be originally. It's so easy to slant the tone of an article by careful deletion; it's an assymetric battle against free exchange of information.
And some of those have been dissidents.
Organ harvesting for executed victims has happened in the past. Officially, the practice has ended but there is no way to verify.
China executes a lot of people.
True insofar as that goes, but the government isn't monolithic. At least, not entirely. Ministries do jockey for power among themselves, and the Ministry for Ecology and Environment has gained/consolidated responsibility and authority under Xi (somewhat similar to the formation of DHS in the US).
If you want a concrete example showing that this isn’t just propaganda, you can look into China’s reforestation effort, through which 66 billion trees have been planted since 1978 (enabling many at-risk species to bounce back).
The Soviet fishing fleet also massacred a huge amount of whales just to meet dumb quotas imposed in a centrally planned economy. There was not much real demand for whale meat or oil in the Soviet Union.