User blog comment:PUNCHURPREGNANT/Gray and Silver Predictions/@comment-1776824-20140112194221/@comment-1776824-20140112215654

Never stated that Demons couldn't use Magic (Juuhou also translates to "Magic", btw). The point is, is that until proven otherwise, Silver is a demon from the Books of Zeref that was created centuries ago like his comrades, and that people are just grasping and contorting things so that their ideas come out on top. You should make predictions that at least have some sort of sound backing instead of relying solely on "what if" statements.