@anon42939288 True, the easiest way would be if there was an AoE voice chat included with the game. It is planned I believe. Until then, the cellphone discord isn’t that bad of an app. If you are connected to wifi it doesn’t use any of your plan data, and actually sounds quite good. Yes, you need a cellphone, It seems more like they were asking the easiest way to communicate available to them right now at this point in the game. Not what would hypothetically be the best solution.
Also, a very nice addition to the PS4 controller is a little keyboard you clip on to the bottom of the controller. Its $14 at walmart and Amazon, would make typing in chat MUCH easier than the popup keyboard.