I think people are free to interpret the story and its supposed 'themes' however they so wish. Especially when the game's themes change as often as the wind blows. ARR and HW were prone to gritty realism for the most part, with many lasting consequences all around for both antagonists and protagonists alike. It was from SB and beyond where the tone shifted towards some of the more controversial and predictably stale JRPG tropes.

No story is going to please everybody, though I think it does a lot of people a disservice to dismiss concerns about Dynamis being introduced so hastily at so critical a point. Many of us have invested in and played the likes of WoW. We've been at these crossroads before and seen large swathes of a story retroactively changed to suit the latest whims of what the writers think is 'cool' as well as increasingly contrived methods introduced to empower and keep certain characters alive.