Why HP inflation is a valid concern

[SyzzleSpark]

adjust tank HP, tank dps, non-tank hp and incoming damage separately

You're presenting a quandary that has no precedent in the game we are discussing as they've never needed to change the HP scaling formula. It. Is. Not. Connected. To. AP. Its relationship with VIT is completely different.

Dragoons have had more HP than other melee jobs since ARR. By the logic this entire thread is using, the infamous runaway HP inflation should be such that, 2 expansions later, raid AoEs should be killing every melee DPS that isn't a DRG, or DRGs should be surviving said raid AoEs with thousands of HP to spare.