You are completely correct, but SE never cares about past content.
RDM, for example, has a range of 10 levels where Jolt III is stronger than either proc it grants (so you ignore them), SMN was, at a point, stronger at level 79 than 80 (since Phoenix was less damage than Bahamut).
It's so tiring that they gut 80% of the game (literally all previous content) for some "balance" nonsense that ruins the job on top.

People have been saying that, with this change, BLM needs Umbral Soul at level 30 or something to even comfortably recover MP in dungeons and some trials, esp in the JP side. I love how much SE listens to feedback.