I agree 100%. My Prototribal project is taking the best ideas from all cultures and combining them with DIY green tech to make them more sustainable. I'm not saying that I've figured out THE way to live sustainably off grid, and it definitely won't work for everyone. I'm just saying that I've figured out A way to thrive outside of CIV, and I've been living it for a while now.
I typed out a long reply last night that had links to projects and studies but it wouldn't post. Maybe when this site runs a little better I'll post the info up again. My youtube channel is Ernesto Apocaloptimisto if you'd like to see some of my past projects though.
We may not agree on everything but I'm just glad that you care enough to think about stuff like this. The future is going to be interesting if nothing else!