not as awful as countries like amerikkka, and soviet environmental protection laws were very strong at the start and they were diluted over time by revisionists after the death of Stalin. But even IF the USSR had not been better it is a mistake of the past, and climate change and environmental preservation and restoration is central to every leftist platform, so like wtf is ur point. Like even IF u werent just outright factually wrong what is ur point "we cant fix anything because someone in the past failed"?