None of what you say aligns with disappearing people. NATO can easily do its role without that. In fact you can argue that NATO states like US/UK/Turkey which have disappeared people are very unlikely to do it against peer adversaries like Russia, China etc because of the risk of blow back. It's far more common to it to groups deemed as terrorist, Latin American countries etc.
Similarly countries like Sweden and Japan are well armed and not in the business of disappearing people.
That's a very broad interpretation of disappearance and I don't agree with it. NATO isn't in the business of disappearing people either - Assange and Snowden have not disappeared. But Gedhun Choekyi Nyima has disappeared. Kidnapped when he was 6 years old by agents of the CCP and nobody knows where he is now, although China officially says he's doing well.
By painting with such broad strokes, we are comparing entirely different types of actions.
Similarly countries like Sweden and Japan are well armed and not in the business of disappearing people.