There's nothing wrong with trying to be more independent, should you so choose. But honestly, people are fairly free to live that "pre Industrial Revolution" lifestyle right now. Join an Amish community!
In reality though, most people I know don't WANT that lifestyle, because we've traded a lot of self-sufficiency off in exchange for having an easier life, and one where we're able to focus on specialties of interest. That's done by embracing INTERdependence.
For example, my primary skill and interest is with computers and I.T. If I wanted to be a lot more independent, I'd get stuck spending many hours on tasks like farming and food preparation, that I'm not at all interested in doing. Sure, if I *had* to do it, I probably could... but I think our society is pretty well established in such a way where I'm not forced to do so. To me, that's progress... not some inherently bad thing.
Now, if we're talking about people who can't seem to find or keep a job that pays enough for them to survive? Then sure.... we're now talking about folks who might really benefit from investing time and energy in such things as planting their own vegetable gardens. (It beats being stuck unemployed and having nothing constructive to do.)
As far as the whole "going off-grid" thing is concerned though? Right now, I don't know that it makes sense in many cases. I say that as someone who just invested in a solar panel installation for my home, too. The fact is ... this "investment" is only financially sensible if you take a very long term view. Up front, I'm forking out upwards of $30,000 for a system that will only produce 65% or so of our energy needs -- and the math REALLY starts making it look like an unwise expenditure if you don't factor in the $10,000 tax credit I get back for it, plus another state credit of a couple thousand bucks.
The people who do those solar leases with low or no money down are in even worse situations, because they're #1, not recouping the tax credits and #2, are locked into contracts they can't get out of if they decide to move and resell their homes. (They have to convince the new home buyer to assume the lease, which they can't even do unless their credit score is high enough to allow it ... and may not WANT to do, vs. just signing up for a brand new contract and getting the latest and greatest panel tech. installed as part of the new deal.)
Ultimately, I'm betting on electricity prices going up enough that when I project things out 15 or 20 years from today, the power my panels generate for me will theoretically be worth a lot more than it is right now. But who can say if the power companies will continue buying back excess power you generate over what you use? If they stop doing that, or start paying only pennies on the dollar for it -- this could quickly turn into a real loser of a deal too. (Don't forget, your panels generate NOTHING when the sun goes down ... so you want to get repaid for extra power made during the middle of the day, to offset what you use at night.)