Bitcoin is not the first money with a hard supply limit in some abstract sense, and treating it mainly as an escape asset from empire misses the more important point. The system was designed as peer-to-peer electronic cash, allowing online payments to be sent directly without relying on a financial intermediary, with issuance rules enforced by the network rather than by decree. That matters because the problem being addressed is not only debasement, but dependence on trusted third parties, reversible payments, and the costs that come with that arrangement.
It is also too strong to say no army can confiscate what it cannot access. Keys can be protected, but users can still be coerced, custodians can be compelled, and privacy is not automatic. The strength here is that ownership and transfer can be verified by anyone under publicly known rules, and changing the monetary schedule is not something a legislature can simply vote into existence unless the users running the system accept it.
