It's not about eliminating government, it's about building an alternative that some people can use voluntarily if they wish, while others who want to keep the government system are free to do that at the same time.
It would be like a town where the government fire department was corrupt and stealing from the town's treasury, so some people move outside the city limits and set up their own volunteer fire department.
Maybe it doesn't work as well. Maybe there are fires the volunteers aren't prepared for. Maybe some government firefighters start fires in the unincorporated area to make townsfolk afraid to leave and join the rebel group. But at least the volunteers aren't stealing from the treasury any more.
It would be like a town where the government fire department was corrupt and stealing from the town's treasury, so some people move outside the city limits and set up their own volunteer fire department.
Maybe it doesn't work as well. Maybe there are fires the volunteers aren't prepared for. Maybe some government firefighters start fires in the unincorporated area to make townsfolk afraid to leave and join the rebel group. But at least the volunteers aren't stealing from the treasury any more.