Well, that was their choice of words on the site that I found. I guess no nuclear bomb is truly 'useless' but it's sure possible for it to be 'out of spec' or even 'counter-productive'. Think about the whole context of warfare. This must be a very expensive bomb to build, with refined uranium being a very scarce and precious resource, and also very difficult to deliver without killing the pilot. Even assuming it could be delivered with an ICBM of some sort, saving the 'pilot' question, it's so huge that it would wipe out far more than the target. At the least this is a waste of your precious resource, refined uranium. And unless you really are a lunatic and seeking to cause as much destruction as possible, it doesn't do any good to take out hundreds of square miles of countryside along with the military base that you were aiming at. What it does do is make
you look bad to kill the vast number of civilians that would be killed along with the military personel. So from a 'pragmatic' perspective of waging war 'intelligently' I guess it is essentially useless. Weird as it sounds to talk of pragmatic and intelligent use of nuclear weapons...
