I disagree. Keeping your opponent in the 'fog of war' is a legitimate, reasonable military aim. In the olden days, radio/TV transmissions and newspaper publication was severely restricted during military operations. Today, those are largely irrelevant as news is spread on social media, so this block is the modern-era equivalent.

Note how my argument does not depend on whether we're talking about a good war, bad war, just war, evil war, etc.