Haruka: People ignoring how mature he can be and diminish that in contrast to his bratty side
Touma: People making his main trait "he is dumb"
Minami: ....Unpopular opinion but whatever goes on with Ryuu (yeah i know that's the canon but it can still annoy me okay)
Torao: Anything an anime only says about him (i don't blame them!! There's a lot about him they don't know yet)

That is what comes to mind now