You say he's living off-grid, but I don't recall a single point in the article that he suggests such a thing. I do recall him suggesting that he mostly lives in caves and scavenges and eats roadkill. This may play a small part in off-grid living, but this is not off-grid living.
He has a library card and he uses modern technology... and yes, without modern society, he wouldn't have that technology to use and to learn. But we've been learning from our ancestors, friends and communities free of charge for thousands of years. There is little difference here, except that with the advent of the internet, we can learn from millions of our ancestors and peers, all around the world instead of just those in our local community.
I say good for him. I'm fascinated by off-grid living, but this is not it. You do everyone a disservice by implying that living entirely without money, without anything and living off-the-grid are one and the same.
People who live off grid may not use monetary transactions in the modern sense, but they do use a form of money - they barter in goods, services and goodwill. That may not have a physical currency, but it is a currency nonetheless. They trade with their communities, their families and their friends. This is how off-grid communities work, this is how modern society works - it's just that instead of trading goodwill, we trade this bit of paper with the slogan "In God We Trust".
The piece of society that clearly isn't good for the soul is this constant march of consumerism and planned obsolescence. The promotion of quantity over quality, where nothing lasts, everything is cheap and disposable and everything we do is done to the point of destroying our environment. The sooner we find a way to get off this treadmill, the happier our environment will be and the happier everyone is going to be.
I take my hat off to this guy, he's found a way out of it, he's happy, his soul is satisfied and he wants to help others to find their way to that satisfaction. So perhaps instead of judging his moral superiority, perhaps appreciate what he's found that so many of us struggle to find and many don't.
Perhaps take a lesson out of his book, look around you, ask yourself what you're truly happy with, ask yourself what would happen if you lost it all, and wonder if any of it matters. He did, and he realized that none of it mattered... and now, he's happy.
When those around us die, we pause, we realize that we've not been living in the moment, enjoying what truly matters in our lives, forming emotional attachments to meaningless things to a meaningless life - that's why we coined the endearment "the rat race" and we resolve to stop churning on this treadmill and appreciate what truly matters... before we get right back on the treadmill and go back to doing the same things we did.
So... yeah... not sure what my point is. Perhaps be happy that he found happiness and is striving to help others find happiness too. This modern need to exponentially accumulate shit just because the media has groomed us to do so has seen ever increasing rates of depression and suicide and finding anything that will combat that and bring people emotional or spiritual satisfaction can only be good.