Why give WMs abilities that we're asked NOT to use so much?

[Taika]

its not about not using your abilities, its about using them correctly and knowing when and where they are best used.

Sounds like this was the issue. If you're using Medica IIs and Cure IIIs right from the start of fight you're very likely overhealing a lot and those spells really can draw a lot of enmity. In hardmode I never use Cure III and won't start using Medica II until during heart phase (so I can just nuke through it). In extreme I won't even start healing until first jump (and I rarely use Cure IIIs there either, usually Medica is enough with SCH healing as well).