Full Idea
Evidentialism is not a theory about when one's believing is justified; it is a theory about what makes one justified in believing a proposition. It is a thesis regarding 'propositional justification', not 'doxastic justification'.
Clarification
'doxastic' concerns beliefs
Gist of Idea
Evidentialism concerns the evidence for the proposition, not for someone to believe it
Source
Daniel M. Mittag (Evidentialism [2011], 'Preliminary')
Book Reference
'Routledge Companion to Epistemology', ed/tr. Bernecker,S/Pritchard,D [Routledge 2014], p.168
A Reaction
Thus it is entirely about whether the evidence supports the proposition, and has no interest in who believes it or why. Knowledge is when you believe a true proposition which has good support. This could be internalist or externalist?