As someone who has been playing Kingdom in 21:9 for years, it feels insanely limiting to see the game that way. Especially when you're playing zoomed in as close as you are.
If you want more overview to react earlier, zooming out might be a very good choice. Still, I just like this view better generally, because it drags me more into the game and it feels more like the view of the chosen one - and of cause explaining things seems better close than far away, as well.
This is not about the genre - I play Kingdom like this. I mean, you can´t compare this to AoE in respect of a RTS game, it´s more relaxed than Age and there is no micromanagemrnt and multiple troops to controll, so the basic gameplay does not really demand to be zoomed out. For me this is much more relaxing as Age and therefore I like the immersion more.