With the caveat that I have no numbers to back this up I'll posit this. Even if everyone who reads this post or read any post here or even knows someone who has heard of hackernews takes your advice that it still wouldn't achieve a balance with nature (we can leave that undefined).

I doubt the grassroots approach will work for anything more than superficial change and that governments and economies will need to change before any real progress is made in that direction. The system is designed to work with consumption.