can't have freedom because collectivist coercion still exists? ... seems like faulty logic.
The time for justice/voluntary exchange is always right now. Not in the future when you think it's suitable for every party...If an anarchist is going to be consistent rather than a hypocritical statist, then they should promote voluntary exchanges at all time. Regardless of your fears.
I haven't made that claim. So that's a straw man.
I'm saying {state + state enforced border control} is not necessarily a less libertarian outcome than {state with 'open borders' policy}.
The time for restitution (part of justice) is right now too of course. And state border control can be a form of restitution to the people subject to that state's predations. A consistent anarchist needs to recognise that, regardless of their fears.