The reason Summoner needs revamp threads keep popping up

[Akiza]

There is no summoning magic. Arcanists arrange aether into mathematical patterns to form Carbuncle. Summoners arrange corrupted aether into form, defeat said form, and bind it into an egi. There's no difference, barring the soul of the summoner granting the summoner the ability to bind the aether into egis, rather than a carbuncle-like form.

Seriously, read the cutscenes again.

If the Arcanist's and Summoner arrange Aether into mathematical patterns than why are Arcanist's a disease Mage class and why can't Summoner's shape the corrupted Aether into the form of the Primal's for a short period of time.