The takeaway is the dynamics that can be utilised and now more polygon budgets.
They used examples of user created maps having as good AI mapping, lighting and contextual interactions as those designed by developers due to the need to program these indvidually for each map being removed.
Also there is no game I have on my PC that can run in 4k at that level of fidelity and framerate. I’m not sure any game currently looks THAT good.