Human greed isn't a result of economics, it's just what economists study. Carbon taxes and carbon capture are absolutely the best solutions to climate change.

There is at least one valid point here. Neoliberal economics led to a lot of wealth creation and economic growth, which increases CO2 emissions.

But it also helped prevent large scale wars which may have emitted loads of CO2.

Not sure about that, I think it's more industry lobbyists and politicians listening to them. There are lots of economists with good ideas about this. A carbon tax or emissions trading might well work if they didn't give out exceptions to polluting industries for fear of them moving elsewhere.

Most economists do not support currect decisions made by politicians