You both are misinterpreting what I said. That percentage was merely a random example to cite people quitting over A3's immense difficulty would likely quit later on due to "having nothing to do" if it were nerfed enough they were able to clear it. Shelf life is fine, but there needs to be a wall of some degree maintain a lengthily enough challenge until the next bevy of content is released. Frankly speaking, if people outright quit because they cannot beat A3 savage, they were always going to quit eventually. The issue I take with nerfing it is this presumes all content is meant for everyone. I am a big proponent of midcore level raiding, yet also feel there should be something in the game for those who enjoy brutally difficult challenges. It's the equivalent argument I have towards games that claim to have multiple difficulty levels, but make them all relatively easy.
The operative word there is "you." Conversely, I would have fun preparing for Savage, but I'm also someone who will grind for 7+ hours straight and occasionally enjoys games like Bloodborne, which is notorious for beating the crap out of you until you learn.
Now if they brought in the Echo, I could accept that "nerf" because it appeases both of sides. I still have the opportunity to get tarred and feathered until I finally get it (or die trying!) and others get an easier challenge if they wipe. What I don't want to see is a nerf equivalent to Steps of Faith. While I do appreciate why they did eventually nerf it, SoF went from a legitimate challenge with some interesting mechanics to a complete snooze fest. If they just lowered A3's DPS check slightly, I wouldn't have as much an issue.
One other solution I could get behind is what Mr. Happy grudgingly suggested. They nerf A3, but the next levels of Savage become just as hard to compensate. Basically, it opens up progression and a better opportunity to prepare for the harder challenge ahead.