NATO lost its credibility when they didn't back Turkey after a Russian fighter jet violated Turkish airspace and was subsequently shot down.

Or when they pulled out of Afghanistan and the world saw 20 years of occupation unravel within a couple weeks.

Or when they went ahead and destroyed multiple countries without much thought.

At this point, NATO is just a bully with a big stick, whacking people then scurrying back across the pond. As well as a marketplace to force allies to buy and get locked in to the American arms industry.