If Square wishes to they could easily change the enrage to an autokill, or make any kind of adjustment to the fight to fix it. Seeing as how we've seen multiple patches since this has been discovered its safe to say that this isn't on Square's urgent exploit list like the other exploits that were patched in the past (Twintania, Titan, Chimera, Hydra).

Til then, players are free to complete this fight any way they want. Confident experienced groups do not want to waste 7 minutes waiting for clicks to count down, whereas new groups have the option to 3heal it for easy loot, so to each their own.