In relation to the downsides of so-called 'economic growth': when you add personal fear to modern society-wide myths and more than a century of compulsory corporate propaganda, etc, you get a pretty potent brew of motivated miscognition.
I think it's one manifestation of the concern that "climate change" is just the latest example of "no crisis should go to waste" political manipulation. I'm not so concerned directly with that, but with the jump to "clearly the solution is a 100% renewable grid".
I'll be ready to contribute even more of my income to government once the approach is amended to include massive support for next-gen nuclear power, and a plan to continue the rapid expansion of the world's electric capacity.
Personally I like ThorCon's approach best, but there are plenty of other worthy contenders.