Blasphemy counts support gems as skills

Supporting a blasphemy aura with "Heightened Curse", a support that has the "Curse" tag, reserves another 60 spirit, while using another support does not. I assume this is an oversight, because 60 spirit reservation is a pretty steep cost for 25% increased curse effect.

Heightened Curse has a cost & reservation multiplier of 140% that is applied to gems it supports