Yes, people should become more independent and try to produce their own food and (I think it is important as well) also their own energy. I try my best: we have a garden, a photovoltaic system and an energy storage.
But as soon as you are part of the "hamster wheel", it is not so easy to escape anymore. For example if you own some ground the state (and often also some banks you have to pay) takes a lot of fees: so you are forced to stay part of the system and keep doing your work ... especially if you are not responsible for yourself only but also for the rest of the family ... Nevertheless I agree with your point of view.
By the way I think one small part of the food problem could be solved if more people would consider to eat insects as well (I would do) which altogether have a really huge biomass and contain a lot of proteins.