Can you imagine a scenario where you secretly write some words down on paper, three years ago, near no devices, and you store it somewhere where you absolutely know for sure no one will ever access? I can imagine such a scenario for myself.
That's what he did.
Then we have the whole Trust Wallet compromise on his iPhone.
doggosphere|5 years ago
He may have taken a photo of it. Maybe left it out on the table when a friend was over. Maybe wrote a text copy as backup and forgot he ever did that.