There's a difference between saying "its impossible to do it securely" and "few currently do it securely". Also, I'm not trying to make the same mistake as the

There's a difference between saying "its impossible to do it securely" and "few currently do it securely". Also, I'm not trying to make the same mistake as the OP and claim that bootstrapping computers is at all relevant to analyzing whether PoS is secure. I'm just pointing out the absurdity of the OP's argument by showing that his metaphor trivially breaks down: reductio ad absurdum.