The way I see it, why leave?
Am I just going to let the place fall to ruin because I didn’t get my way this time? There are people here who want to make things better, just like I do, and they will need my help next time. It’d be selfish for me to leave them and make things better for just myself when we’re supposed to be trying to make things better for everyone.
If things get truly bad, I have to hope that more people will want to make things better. That doesn’t work if everyone just runs away at the first sign of things going wrong. If you’re of a group where you might be persecuted, and you find yourself in danger, then go, run, but I’m reasonably safe for now, so I will stay and hope for a better tomorrow.
This is like those silly fake IDs that the sovereign citizen goofballs use, and as such it would fail at being an ID in the same ways.
While not helpful for privacy, the truth is that the only reason a state ID has any value is because it comes from a ‘trusted’ source who verifies the information on it. An ID that isn’t issued by a trusted source has no value, as it would be no different from me just asking the person holding it who they are, they can say whatever they like, just as their printed card could say whatever it likes.