It is permissionless but if you risk going to jail for using it, how does that help you? Who will accept it?
Whats your plan when the gov bans bitcoin?
IMO the chance they are banning is relatively low. BTC is no problem for the state, it does not work as money, it is a "store of value" now. There are numerous stores of value, no problem for the system.
It was a p2p currency once, that is a serious risk for the state. A store of value is not, just like Gold.
Bitcoin is illegal in some jurisdictions. Question for you: is it still used there? If yes, how? And how much?
How much is Monero used in those jurisdictions?
There's no way of knowing, which I assume is your point.
If authorities can control internet access and surveil us in a dozen other ways it might not matter if bitcoin is permissionless.
That's why I think nostr and other open source freedom tech is incredibly important