I'm not entirely sure why people tend to hate on Tidus more than other protagonists. I think a lot of it has to do with him being the first protagonist in the series with voice acting and at times his voice could get irritating when he was in a tight spot. All in all though I felt like he made the game entertaining and had charisma for a change. He "whined" a lot, but that kind of gave him some more personality. Not the best character ever, but definitely fit the role he was given quite well.