What??
They depleted resources and ruined things?
Without petrochemicals, SUVs, and suberbs?
Without capitalism, and the nasty old USA?
Nope, gotta be a lie.
Petrochemicals were definitely deadly for North American megafauna like dire wolves, sabre-tooth tigers, etc. For proof all you have to do is visit the nasty capitalistic La Brea Tar Pits and fossil museum in Los Angeles. I’m surprised savage, predatory human hunters left any of their prey alive and able to get trapped in the tar ooze. But a huge number was able to die without human “assistance.”
A couple years ago it was in vogue to “research” the various ways that agriculture — the foundation of all civilization, btw — was the root cause of large numbers of serious common illnesses. So, no hunting, no gathering, no farming, no nothin’.