With all due respect, objectively, perhaps we're not the ones looking at this the "wrong way"?
The game was pushed in the direction of "playstyle" and rightfully so. It made the game so much better without relying on the "Holy Trinity". It was so that people didn't have to worry too much about which AT was actually on the team. If the goal is to move back to that box, then that is the issue with this change. It does that only half-heartedly by removing the reward.
I think ultimately, this has no clear purpose and seems to be something shoe-horned in. With the Aether reward it at least held substance. Now it just comes off as a failed attempt at a band aid. Still not clear one why the attempt to put everyone back into that box is happening, even with your scenario above, you are now directly forcing a particular playstyle. Seems to go against the grain of the game.
That is my feedback for this.
Edit: I just saw your addition to your post. That provides a bit more clarity on the decision. I can't say it changes my mind much, but it at least adds more context to the decision.