[anfilt]

When you say "reinforcing and emphasizing things we do know" is honestly concerning. That is a common tactic in propaganda. Especially when you consider propaganda's goal is a systematic effort to manipulate other people’s beliefs and attitudes. Using different events to reiterate the same thing is just trying reinforce whatever idea/fact is being reiterated.

It's even worse when what is being reiterated is not true because reiteration effect (https://en.wikipedia.org/wiki/Illusory_truth_effect). This can be even aggravated further since a lot modern news is not just a statement of facts, but can also include various opinions which may be only partially related to that fact, but get reinforced as well.

However, repeating something over and over will decrease information density. Heck it's used in error correction when dealing with noisy/lossy channels the information theoretic sense. So reiterating things of course will reduce information density.