I disagree. You often see soldiers making mistakes that Tzu warns against. Some of what he says has only been put into practice over the last hundred years as we have developed doctrines like manoeuvre warfare. The advice sounds generic because it’s been given for so long! Everyone knows it - it turns out it’s difficult to have the discipline to apply it which is why it’s important to keep saying it.

As a concrete example - Tzu bangs on about deception. Super obvious, right? Doesn’t need to be said? No - it turns out inexperienced commanders constantly forget to apply deception and need to be reminded. My tactical checklist says ‘use deception’ and many other things Tzu said.