He is very easy to play, passive ability and jump to the side make it possible to quickly take a good position, the bow has a huge damage, and a squall of arrows can easily break the shields, the arrows themselves have a HitBox the size of a log, and the ultimate is typed very quickly.
RE: Hanzo does not require high gamer's skills. Change my mind
He is a high skill hero, so many people aren't mechanically skilled enough -- or making the right pick-offs -- to use him effectively. In a game with point objectives snipers are generally not great at taking or holding objectives, so it takes a lot of team coordination for them to be useful. It's okay though, as long as they're trying. You have to get good at him somehow.
RE: Hanzo does not require high gamer's skills. Change my mind