nato does not have any democratic principles in its rules because was assumed that everyone in it wants the same thing, so everything needs to be done with full agreement.

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Consensus decision-making is a group decision-making process in which participants work together to develop proposals for actions that achieve a broad acceptance. Consensus is reached when everyone in the group assents to a decision (or almost everyone; see stand aside) even if some do not fully agree to or support all aspects of it. It differs from simple unanimity, which requires all participants to support a decision. Consensus decision-making in a democracy is consensus democracy.[1]

en.wikipedia.org/wiki/Consensus_decision-making

Consensus is far more democratic than majority rule, which is the norm in most Western democracies.

en.wikipedia.org/wiki/Tyranny_of_the_majority