It's actually true that some blame can be apportioned to fossil fuel companies that have actively pushed "more fuel consumption" since the 1970s, the Koch Group in particular funde a slew of think tanks to poo-poo and crash and burn any grass roots public transport movements in the USofA during the past 50 odd years.

It's less true that a valid comparison should be "if not modern 21st Century life then hunter gather".

There's a middle ground more agrarian, less hunter, lifestyle that supported a large population in the past and can likely support a larger population than Victorian times if farming | mining switched across to renewables (electric | hydrogen) instead of fossil fuels - we've learnt a lot about efficiencies in the past century, it's a matter of application and less consumption now, certainly time for less greenhouse gas being released.