The question was about the Battle of Hastings in 1066. Since the battle and the period following it are pretty well documented, there's no need to look for modern examples - we know what happened in England/Britain after William/Guillame won, and the results were absolutely transformative. Your summary of "the main outcome of a war" is completely disconnected from what took place in England after 1066.

I believe his point was that it was transformative for the elites (who are the one writing history) but not so much for society in general. A refreshing point of view; I also believe we tend to inflate the influence of war and politics and agency really in history.