The path to such a future will either be paved with mass extermination to lower to population to remove scarcity or via surviving with government until scarcity

The path to such a future will either be paved with mass extermination to lower to population to remove scarcity or via surviving with government until scarcity is defeated and government can be safely dismantled. I do agree that there is a root problem with any existing power structure not being truely incentivized to reduce scarcity and then loose power, but that doesn't make the thanos solution more ok.