Not every game is equal in this regard though. That's the issue with WZ, they claim Atmos compatibility but it is not as good as other games that have it. One can test this by firing up an Overwatch game with bots and testing vertical cues (very apparent) with Atmos on, and then firing up a Warzone bot match (practice) and listening for the same verticality with Atmos enabled in Windows. Just not there.
Not sure if that has anything to do with Overwatch having Atmos in game settings, vs. Windows handling everything when it comes to Warzone, but from a consumer standpoint when you are selling "Atmos" as a brand for a certain level of audio, that shouldn't matter. Everything should "just work" but sadly in this niche that is rarely the case...