It's for content when you unlock it. It's crazy that people would rather cry and work entire class design and stuff rather than just not put it on your hotbar when it becomes irrelevant, there is not a single class that does not abandon certain spells as they grow, and lore wise it's actually great.

The arcamist armed with carbuncle and dots as well as healing magic was met with a fork in the road...
on one hand they could invest himself into the healing arts meeting two fairys to aid them.
Alternately they could choose to embrace the raw power and go offensive instead strengthening their damaging magics and egis to become a dangerous plague on the land, abandoning the pursuit of healing magics, though not forgetting the lessons of the past.