Share it around.
This isn’t a comment on any particular policy case, but the general risk of overusing ‘national security’ as grounds to hush things up is that people will stop taking the term seriously. And at some time in the future, when there really is a national security need to hush something up, government will wish they hadn’t made the concept quite so risible in the eyes of the public.
In other words, overuse of the ‘national security’ line is itself a threat to national security.
To quote the long lamented D.N.A.: “Some say this has already happened…”