Unfortunately, when it comes to making any normal content ever so slightly harder and longer for the sake of having a good pacing and reasonable challenge, players will throw a fit and tell you to stop and that "everything is fine". Because, apparently, when the game, that involves combat, asks you to fight - it is bad.
The Endwalker MSQ final trial is the biggest offender currently because:
The final part where the epic song kick in. The Scions give you the stacking DAMAGE UP buff, lmao. When you are meant to finish the boss with them but she is already at a single digit HP. This fight literally functioning backwards. 10 year story arc culmination point, by the way.