Reasoning for removal of TP, but not MP?

[Millybonk]

Because it's not the same.
It's a healer using DPS spells. That's their whole MP management shtick.

Healers: Manages MP by balancing DPS vs healing, their role vs bonus damage.
RDM and SMN: No MP issues unless they raise, stepping outside of their role.
DRK and BLM: MP management integral to job mechanics.

Physical DPS are the only ones who were arbitrarily gimped for doing their core job role too much.

Hmm: indeed, healers have to manage MP between dps and healing, but the same applied to TP classes before, namely managing TP between AoE and single-target.

You did acknowledge the duality of healer also being dps, but now you claim TP classes were gimped before due to AoE TP costs, but you don't apply that reasoning to healer wanting to AoE dps, because they're still gimped by the MP cost.