You're not making an attempt to understand the conversation, just being pedantic. He said he was keeping his money in bitcoins to make it so that his money was harder to seize. Yes, he is spending dollars, but the savings is in bitcoins.
It's not being pedantic, it's crucial to the problem of Bitcoin. If I'm trying to live outside of government meddling, and yet I'm spending in dollars, then I may as well keep my savings in monopoly money. Why? Because converting to dollars (outside of a guy handing you cash in a shady park) requires a bank account, which in turn requires government involvement--and that's exactly the problem the OP is trying to avoid.
You think keeping Bitcoins prevents the government from seizing your assets? Well if you trade in dollars, then they don't HAVE to seize your Bitcoin assets. They can just stop you from converting to dollars, and effectively achieve the same result. All the Bitcoins in the world are worthless if you trade in dollars and can't convert Bitcoins to dollars. And if you think MtGox is going to stand up for you when the government comes knocking on their door and demands they stop honoring withdraw requests for your account, then you're wrong.
Bitcoins are cool, they're useful today, and they have potential. But until you can buy a sack of flour from the corner store with Bitcoins, they're not an effective way of evading government meddling. They're just a proxy currency for people who don't understand better.
You've now expanded your argument a lot further than original. I'm not a bitcoin hoarder so I won't try to defend that approach. Your original comment said that he was living off dollars, as though they are equivalent, which I don't think they are. You are right that until bitcoins can be spent directly for goods you are limited. Dollars are not the only thing you can trade them for. If you piss off the US government, they have to work very hard to shut down every exchange in every country in the world. I don't think it's a rock solid plan, but it's not just "living off dollars".
They would not just have to stop you from converting to dollars, including face to face with people you trust, but also stop you from converting to any currency or commodity that is readily convertible to dollars with a small enough loss.
