It was a case of the squeaky wheels getting the grease.
On the one hand, we had an
81-page thread on the forums about people wanting a story mode.
On the other hand, we had people that SE apparently interviewed wanting even harder raids, along with reactions like the ones at Fanfest, consisting of a chorus of booing, in response to them even contemplating reducing Coil's difficulty.
Meanwhile, the people who enjoyed raiding at the difficulty of Coil mostly just went about that without complaint.
That's what got us the normal/Savage split we had in Gordias, which resulted in the two groups that were making the noise before being satisfied (or at least more than they were in Coil), and the people who were satisfied before, but aren't now, speaking up.
It's clear (comparing Midas to Gordias, and their willingness to adjust A6S so quickly) that SE are listening to an extent, but they're generally glacially slow and overly cautious to react to anything that wasn't overwhelming breaking their intention on how players should be consuming content.