Most petrol type products are not very long term stable.. which is sort of why they make great fuel. Unless someone had a secret oil refinery and a huge supply chain.. they should have ran out gas by year 3.

Did the show ever get to the heart of the comic?

Which was the rejection of going ultra violent brutal hardcore. That people aren’t and don’t have to be inherently evil and to not let a few bastards ruin things.

Was everything else along the way needed? No. But it helps.