You may be right in saying that is their approach. Unfortunately, it's an incredibly shortsighted and flawed approach. When it comes to job balance, the only content they should be focusing on is Savage and Ultimate. Why? Because only those pieces of content push the jobs to their capacity. Dungeons are a complete joke. Back in Stormblood, I ran 70 dungeons without a Healer. That's how piss easy they are. You don't balance around content that barely requires a pulse. This is the exact same problem they had with Piercing. Yoshida outright acknowledged they never considered Dragoon when balancing Bard which led to Bard utter dominance throughout all of Stormblood—to the point if you did like Machinist, you were going to struggle finding a group at the Savage level.
And therein lies the issue. We've already seen more and more people either refuse to recruit certain jobs or lock them out of PF. If you're a Red Mage main. You better be parsing at an orange level or you're going to struggle finding a group. Not to mention, it feels pretty bad knowing that if you, a physical range or non-Black Mage caster, played at other job. Your party would have much higher success on any Savage fight in the game.