The 4th stems from the 2nd, and the 3rd stems from the 1st. The 3rd and 4th principles are expansions on the first two, to emphasize the mindset that Voluntaryists should have when trying to resolve conflicts.

That's great this resonated with you! As @finnian pointed out, most people accept the principles but just aren't conscious as to their articulation.

What separates Voluntaryists from most people though, is their consistent application of the principles to all human interactions, no exception.

Voluntaryists do not make exceptions for anyone, including the State and parents, which is what most people do.

For example, Voluntaryists find taxation (imposed by the State) and spanking (imposed by many parents on their children) unethical whereas most of the people in the world are neutral or in positive support of taxation and spanking.