Let me guess. You were running a comp that didn't include at least two of GNB, DRK, BLM, DNC, yes? The issue with the DPS check isn't its severity but the horrendous job balance. GNB and DRK are dealing upwards of 500+ high damage than WAR and PLD despite having comparable mitigation. Both SMN and RDM have been reduced to prange levels while BLM is pumping out low end melee damage. Verraise/Resurrection simply can't compensate with that massive a damage difference, especially when the DPS check all but requires zero deaths. Even amongst the melee themselves, RPR is hilariously outclassed. At the very top end, it's being outdamaged by BRD of all jobs. In fact, a comp consisting of WAR/PLD/RDM/MCH has a 0.5-1% level of damage variance where they can clear. This assumes nearly perfect play from the entire group and you crit enough to overcome the disadvantage. Meanwhile, swapping in DRK and GNB allows the group to clear with two damage downs. That's how ridiculous job balance is right now.
The DPS check isn't the issue here. The devs simply didn't test overall job balance whatsoever.
Who else do you cater it towards? Every other piece of content can be cleared through sheer brute force. There is literally nothing except Savage that pushes the jobs to their limits. You don't balance jobs around the low end because that makes content roll over to any experienced player. In fact, balancing jobs around the high end (but not the very top) benefits everyone. Otherwise, you will start to see jobs being locked out.
Speaking of, since you mention Party finder. They aren't clearing P8S week 1. Even the second week will be a considerable longshot due to the aforementioned job balance. Several jobs right now are simply too disadvantaged to allow for the inconsistencies you'll experience in PF. Warrior offers literally nothing in P8S that Gunbreaker doesn't do better. Meanwhile, the latter brings 500 additional damage with similar defensives. So...
Explain to me how buffing Warrior and Paladin by 300 damage would make any difference except to allow people to play on their preferred job? Yoshida has repeatedly said every job and comp are viable for all levels of content. This has been the design philosophy since its inception. So much, in fact, they purposefully broke the old Stormblood meta of DRG/NIN/BRD specifically due to its overwhelming dominance. Right now, certain comps need to perform significantly higher than others for no justifiable reason. A perfect Warrior simply can't match an above average Gunbreaker no matter what they do. Speaking as someone who cleared the doorboss week one. I performed worse on DRK yet we were able to push through the DPS check despite my Warrior performance being at the 90%+ threshold.
How is that good design?