Why would people be in opposition to more completely optional features?
Square-Enix's development team for FFXIV is most likely as large as is realistically possible to manage at once.

Even if they were sitting on a pile of gold, the limitations of manpower, time and development procedure constrain their development process.

Thus, they can only do as much as the limitations in place allow for them to do.

Now, why would people be in opposition to a feature like this? When X number of artists and programmers are working on this feature, they are not working on some other feature. Developing these options drains their limited resources.

Which is why they need to prioritize what they want to do. Which is why they have to choose. Which is why we can not have everything we want.

If people are against this feature, they want something else instead. You can not have the cake and eat it too. For every feature they implement, for every addition they make, they won't be able to make million other additions that they could if they had all the money, all the manpower and all the time in the world.

It really annoys me that I have to explain these things out. This game doesn't exist in an imaginary world (your head) where everything is possible. Thus it is extremely ignorant to say that this addition wouldn't affect anyone. Developing this feature is resources away from some other feature.