Why is there no aspect ratio beyond 21:9? To state that an ultra wide monitor provides any benefit over a better connection is categorically false. So if balancing hardware is the singular desire why not limit the frame rate to 30, the resolution to 5:4 360p: and force a global 80 ms of ping? Why have graphical options at all? Along side this other serious competitive games support a 32:9 aspect ratio such as Rainbow Six: Siege or CS:GO.
Overwatch in my opinion is one of the best team based multiplayer games ever developed with a massively engaging game play loop and back ground story arcs that I have loved engaging with. However to see issues like this is frankly ridiculous and in a game so inclusive it has surprised me to feel alienated from the game because of one arbitrary decision.
Sorry if this post was kinda long but I genuinely feel that this should be changed.
TL;DR there are no reasons to limit the aspect ratio available to those with the monitors to support it and to state a balance issue is an inherently hypocritical stance.