The government will reclaim the land unless I pay for it with money I make from the system. It’s not possible to opt out anymore. They stole the land too but my guns are smaller.
You still need to pay property tax in perpetuity (in the US at least). Taxes can only be paid with USD aka “system money”, so you’re not really outside of the system in this situation. Plus there is eminent domain.
The only way to avoid needing system money would be to live on national land for free, but then you cannot have a permanent dwelling like a cabin.