In the sense that people who adhere to it do it voluntarily, no.
In the sense that other busyboddys out there might seek out people to convert & force the NAP unto others (physically) & thus contradicting the NAP: yes. This is less clear if the NAP being “forced” is a reaction against a violated contract by another person to adhere to the NAP, though.
In the sense that other busyboddys out there might seek out people to convert & “force” the NAP unto other’s socially: maybe, because social coercion does not always translate into physical coercion.
I say this because what is social is far more subjective than what is physical: a person being beaten to death by another is clearly aggression.
There is the social context, of course, which NAP, to my knowledge, steps-in to ensure that while coercion is not being monopolized, it is not being memetically spread throughout society, per the limiting of agression to self-defense. Of course, then there’s the social aspect of defining what is proper self-defense, property, etc.
To be quite technical, one could label the argumentation on a forum between two individuals to be “coercion” if they are paternalistic enough, despite the almost* complete lack of physical ability between forum members here to harm one another.
*Yes there is an odd small chance of some forum member, offline, tracking another forum members down, but this is a similar statistic such as the possible occurrence of your car getting stolen if you park it, lightning striking, etc.
However, the state enables individuals the use of politics to allow social coercion to physically manifest itself much more easily & much more potently than in a stateless society.
I think it becomes completely absurd to argue that social coercion would remain the same in a stateless society versus state society, & that somehow it would reach a critical mass of allowing the state to be re-instated.
For one, there might require a serious fundamental cultural change in the majority of the individuals in society, wherein the state is seen as coercion & wrong, and that the voluntary society is the actual ideal.
For another, utilizing politics to erase perceived social coercion (such as paternalism, bossism, etc) might lead to witch-hunts & and eventual antagonizing leading to a physical manifestation of conflict (i.e. aggression).