I never disliked Cena because I preferred others over him. I did, but I disliked him because he changed virtually everything about his character I liked and then he got pushed way too far down my throat. I was always going to like Angle, Edge, Orton, Punk more than him, but if he had a character I cared about and wasn't so repetitive with some of his stuff, I probably still could have liked him.
Same with Roman Reigns. Do I like some people more than him? Sure. Is Daniel Bryan one of them, I think so. Do I hate Roman Reigns because he got the push? No. Especially considering Daniel Bryan still got a good career while Roman got the push. In fact, DB was just doing his Earth Savior heel gimmick and title run and Roman ain't been champ in a hot minute. I ain't mad at it. It all goes around.
Not disagreeing that's why most fans turn on him, though. Just silly to blame Roman for WWE not pushing DB at the time.