I do not agree.

The way to self-sufficiency includes electricity.
In the future much of our food will need to be grown indoors.
In a greenhouse or with grow lights.

And the way to advance is to increase the amount of calories one can grow with the minimum amount of human inputs. Or, technology. Running water, irrigation and automatic sprinklers to name the basics.

As you say, solar panels are not energy worth it unless you live below the 30° mark. In America that's the south-west deserts.

Fortunately there are much better ways to use solar and convert it to electricity.
They just aren't as simple as hooking up a photovoltaic solar panel.
They require engineering and mechanical know how.