Why do the devs hate MCH so much?

[Shurrikhan]

TP doesn't exist though.

As a resource to actually manage (beyond just hitting your CDs on CD), neither does/has MP. It's been, at best, a way for Bard/MCH to minimize their damage loss, and that ended with Stormblood.

The point is what could/should be, not what things have been.

Being attached to Sprint made

I just said, in what you quoted, that TP should not be pigeonholed into caster-Sprint.

Whereas, although MP has become easier to manage, almost to the point of only being an annoyance sometimes like TP, it's still very relevant because you eventually can't rez people anymore, even on red mages.

Which is effectively just rez charges, not a larger resource economy.

It doesn't make much sense to give physical jobs MP because MP is supposed to mean Magic Points and physical jobs don't use magic.

The game depicts a world where every vaguely superhuman action has a component of aether usage. And those "physical jobs" are firing spirit dragons and launching wind and fire magics from their kicks and fists.