If you have created a good life, as you define it, for 46 years, offgrid, shut up.
Speaking up just made you a target of authorities who will now take it away from you.
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The authorities will zoom in on him now for taxes and/or various forms of compliance. He will, likely come to regret abandoning his precious privacy and freedom.
Or maybe he correctly assesses that his story will be useful to others.
My first thought too, but I guess at 82 and keeping up on the news, he feels he’s passing on information needed for the future.
“Speaking up just made you a target of authorities..”
Or, any garden variety nut job.