Both nerfing and buffing have their places. Unfortunately this game has an endemic problem with undertuning content relative to the strength of actual job kits and gear and adjusting potencies to indirectly nerf swaths of older content each expansion by buffing potencies the moment they are acquired instead of at (old level cap+1)

Case in point: when dragoon was fresh in ARR you got jump at 200 potency and dragonfire dive at 250 every 3 minutes. One out of two Jumps could get a boost to 300 every minute. Nowadays dragonfire happens every 2 minutes and its potency is upped to 300. jump starts at 300 before getting buffed to 400 at level 74 when high jump arrives

If those damage buffs happened at level 51, then dragoon would be closer to its ARR strength for ARR duties and we'd actually see mechanics