Curate, connect, and discover
The way that I understood it was that supernatural creatures like Seers or witches/mages where encoded into their DNA. Like no matter what Ethan and Benny did there was no way to never NOT become these supernatural creatures (even if they did have special moments to 'unlock' this ability. Although for me it feels more akin to learning to run rather than magical girl transformation type unlocking but thats boring). On the otherhand things like vampirism or lycanthropy are similar to a disease but just....amplified. and so the miracle cure would then work as an almost super antibody rather than a purification of anything supernatural. It's a vacine not holy water ya feel? Although this view is also SOOO borring and basic so ya know ignore me.
Okay so Ethan drank the Supernatural all cure and he was still a seer after, I feel like this tells us something but I can't quite articulate what right now