I know people in real life who have different sensitivity to different stimuli. Some are more sensitive to sight, some more to sound, etc. There is no doubt that FFXIV caters to a very specific set of playskill. Let's entertain the possibility that different people are good at different things, and a slight change in the UI can often release the potential of players who are otherwise being obstructed by an UI that is playing to their weaknesses.

This topic is worth a lot more thought than a simple "git gud" trash response.

That said, I doubt they'll ever do that, as they have repeated claimed that the UI is not open to any significant change because they've maxed out whatever they have to work with. I have a bar (not magnified) as a HUD to watch for procs as I often have my own music playing and it drowns out the battle sound effects, so sound cues are often lost on me. It's a trade off one has to make.