> But you can transfer bitcoins anywhere in the world without anyone blocking the transfer, and you can carry them in your car in a hardware wallet without fear that a cop will confiscate them.

As soon as they’re converted to/from real money, they fall under the same restrictions as everything else, and most of the places you’d want want to live share restrictions on unregulated financial transactions. Similarly, while there’s egregious abuse of cash seizures it’s not like the cops haven’t heard of other stores of value. If they suspect you’re doing something serious, following the money in is what already leads to headlines about police selling large quantities of Bitcoin — and that hidden hardware wallet is going to be seen as proof that you’re hiding something.

That latter point is the key one: there are a lot of people in jail because they thought they could hide money. I would not bet on having the opsec necessary to remove money from your accounts without leaving a trace, and with Bitcoin any mistake means you’ve left an irrevocable evidence trail behind.