People who say this are full of shit.

People blaming capitalism are just distracting from the real issue, which is having not having a genuine culture of sustainability. India, for example, is a capitalist country but it has growing forests and wildlife unlike most of the world. Their conversation efforts are second to none. On the flip side, you have a country like Brazil, which is destroying its vast forests and wildlife for short terms profits driven by pure greed. The difference between the two? A culture of sustainability.

Changing capitalism is not going to change this. For example, we've already seen how Marxist economic systems functioned and they're an even bigger ecological disaster. The Soviet Union literally wiped out the Aral sea for cotton farming. If capitalism was the root issue then the Soviet Union would've been a marvel for sustainability, but they weren't. That's because Russian culture prioritizes short term gains and endless growth over sustainability like say for example, Finnish culture.

It sounds less sexy but that's the real problem. If the general population doesn't believe in sustainability then nothing can ever change. Things like pollution, deforestation, global warming, desertification, water scarcity, overfishing, and so on will continue to get ignored and sidelined in favor convenient short term wins like slightly cheaper gas, political quotas, and growth charts.