Can We Avoid Government Surveillance By Leaving The Grid?
No. Refusing to send emails, use credit cards, or social media doesn't mean your personal information isn't still in databases.
Take it further and you're crossing into a 'lifestyle' of infosec where staying 'off the grid' will basically consume all the time in your day and becomes your life. Maybe *comparatively* to others a dedicated infosec lifer could say "I am 'off the grid'"...from a functional perspective they are as far as a person can get, but no one is entirely 'off the grid' unless they were born without a birth record...born 'off the grid'
This is waaay older than Prism or Snowden or even the NSA itself, and it is inherent to any situation where information is being mediated by a 3rd party.
It's part of existence in the modern world for large entities to have information about what you do...whether you are a serf in Europe in the 1500s or today.