I'll go there through analogy.
Jerry Falwell was fond of attributing AIDS to God, say this was in the nature of a belief that God directly caused AIDS rather than it being conveyed through a retrovirus (I'm not sure this isn't literally true of his beliefs). Say this was a position he and his followers called "AIDS scepticism", that is denial it had any medical cause rather than a theological one. It's then a big step to go from attributing their belief in this positive theory (such as it is) to calling it simply "scepticism" when what you're actually looking at is the reverse of their theory.
Ditto the fact that their belief system, its traditions and the identities involved are actively hostile to the very concept of sceptisism.
Jerry Falwell was fond of attributing AIDS to God, say this was in the nature of a belief that God directly caused AIDS rather than it being conveyed through a retrovirus (I'm not sure this isn't literally true of his beliefs). Say this was a position he and his followers called "AIDS scepticism", that is denial it had any medical cause rather than a theological one. It's then a big step to go from attributing their belief in this positive theory (such as it is) to calling it simply "scepticism" when what you're actually looking at is the reverse of their theory.
Ditto the fact that their belief system, its traditions and the identities involved are actively hostile to the very concept of sceptisism.