Quote from Dark_Sage
A show like One Piece which doesn't allow characters to flesh themselves out at all only degrades the entire genre and keeps people thinking that anime is just a child's cartoon. :/
OP, while is the same main genre like Naruto for example it's quite another style. While people don't die in OP they can die in other shounen action manga.
Whatever happens in a manga doesn't degrades another one or all the manga in the same genre.
Maybe some people will make some false assumptions about the entire genre based on OP, but does that mean every shounen action manga should be exactly the same, so that nobody would think something falsely based on one manga in a genre about other manga in the same genre?