Let's be real a second: Square has their own vision for the game, their own plans. Especially for stuff as big as how it's balanced and the overall fight/job design.
Apparently it is to make it the most balanced (and easy to balance) system that is the smoothest possible so anyone can go in and do decently.
The homogenization toward the 2 minute burst window goes toward that goal.
If just a few people asked stuff such as "make it easier to align for buffs" or "X mechanic is a bit too present" they can just use that as a justification: "The community asked for it" but "the community" can be 3 posts that got something way different to what they asked (DRKs wanted Dark Arts to be less spammed, not removed entirely) or a genuine demand that happened to align with their vision.