The "tenacity" Problem (other melds aswell)

[Absurdity]

Again I can argue DPS doesn't even matter if you can already clear the fight just like extra defensive value doesn't matter if it doesn't let you survive more, I mentioned this in the original post that I don't think improving it will make it a better stat then crit/DH.

Ironically I actually think that DPS does exactly what stats like Tenacity wish they could do, allow for more mistakes. Extra defense is not going to save you from oneshot mechanics, but extra dps allows you to mitigate a death, it allows you to play safe even at the cost of uptime, it allows you to mess up and take a damage down, and still beat the enrage.
Granted all the bodycheck mechanics added to recent Endwalker fights make this a lot more difficult but that's an entirely separate issue as it affects recovery skills like Verraise as well.