he's really got some good ideas about how we could happily organize the world if anyone in charge was trying to do that
Am I missing something? He does say things out loud that many of us know (and barely talk about) and others ignore. He's got a talent for explaining hard concepts to teens willing to listen.
Yes the change may need to be induced from the top and we get to chose who's at the top and push things forward through exercising democracy. Read his books, listen to his talks then go and act.