If we had 6 laws to regulate pillows we might not have had to deal with Mike Lindell the last 10 years...
The EU has grown to include so many countries that consensus on any issue will be difficult.
Bureaucrats in Brussels interpreted that as carte blanche to enact whatever crazy insulting policies they wanted and cram those policies down the throats of the member states. (One crazy example is that the EU has six laws regulating pillows. Why does an economic union like the EU need a single law on pillows, much less six?).
The EU has become the culmination of the Progressive dream of the rule of the "experts," and it turns out the "experts" are not appreciably brighter than their subjected peoples. The "experts" just have a different set of priorities and interests.
NATO, on the other hand, is functionally limited to defense and security, so there is a built-in mechanism to prevent the organization from doing something beyond its remit. If NATO tries to adopt a law regulating pillows, any single member can veto on the basis of pillows having nothing to do with defense and security.