A socialist society can be ecologically devastating. But, unlike capitalist one, it doesn't have to be.

Capitalism pursues infinite growth in a finite world. As long as unsustainable practices deliver you more (which is extremely often the case) - they will be pursued, and if you block them all, it will cripple the economy as it will lower the expectation of profit. Capitalism breeds practices like planned obsolescence, aggressive marketing and tracking to fuel overconsumption, it promotes a lavish lifestyle - all to ensure the monetary flow necessary to keep such economy afloat.

Socialist society is more adaptive in this regard. You can ramp up production and overconsumption, Earth be damned, or you can slow down and invest in long-term, sustainable solutions, even at the expense of short-term returns. The latter, however, means getting less competitive internationally, which is exactly the sacrifice the socialist countries of the past, including USSR, were not willing to make.