Pretty sure NATO would survive the dismantling of some bureaucracy.
Then that's the next Brexit target, innit? Gin up some "grassroots" support for leaving that Mean Nasty NATO What Is Bad And Mean and just never you mind that the original talking points were translated from the Russian.
We know the Russians are working to dismantle everything on the European continent which could counterbalance their ambitions. NATO isn't any more immune than the EU is.
Divide and conquer, one of the oldest strategies. Yes, I'm sure "countries can defend themselves alone" yup, right