NB: Weber's definition of government (which your quote misstates, so to speak, as is often the case), is that the state is that entity which has the monopoly on the legitimate claim to violence. It's legitimacy, not violence, which is key.

For the longer explanation, see: <https://news.ycombinator.com/item?id=37366751>.

That said, legitimacy is a political property, and one which cannot be attained through purely technical means. To that extent I agree with your critique.