Alright, fine, let's go through how bafflingly stupid idea of adding an 'opt out' option is, because you clearly haven't played a healer.
For the sake of argument, let's pretend this option is being added into the next patch, and we'll discuss the ramifications of which is the 'default' option separately, to get the point across.
If the default is Rescue has no effect: Congratulations, you've deleted Rescue. No healer will use it, and the only time the option will ever get turned on is if a static requests it for a specific strategy. I can think of exactly one fight in the entire game that 'required' it, Omega 12 Savage, second boss, and even that was just for convenience in prog. It wasn't strictly necessary.
Now, let's pretend the default is Rescue is on.
Congratulations. You will now die whenever you misjudge your positioning and someone Rescue's you. That is the impact the skill has on you alone. Don't pretend you play perfect, no one does. And in that moment where you fucked up and the healer is on point, the skill doesn't work when it needs to, because you had an opinion.
And that's not the end of it. That applies to any player who turns the option on, in any instance, ever. And it's frankly unreasonable to expect players to turn that option on and off, no matter how 'convenient' that option is made. You have broken the core functionality of the skill because it made you feel bad. When you simply could have positioned in a way that made it clear you weren't taking an unnecessary risk. That is entirely your fault when that happens. And on the healer's side of things, they would be 100% justified in reporting you for it in the spot. But in general? I wouldn't even touch the skill in the first place because of that one single change. Most healers would tell others not to use it, and the people who do would be incredibly frustrated when it mattered, or completely mistake how it worked if the anti-rescue player did dodge correctly, making it harder for them to judge if it had worked properly in the first place.
That's why the option doesn't exist in the first place. It breaks the skill entirely. Either it makes everyone's situation worse when it matters, or you might as well not have Rescue as a skill in the first place.
Just say you want the skill deleted. Because that's actually what you want, in spite of your claims otherwise. But while it's still here, accept that it's being used for a good reason. Because that reason exists, whether you like the result or not.