Yeah, everyone can be however they want to be, but I maintain it is not a good philosphy.
If you make up your mind about all anime because of Naruto, you miss out on things of the same medium that you may end up LOVING like BERSERK.
If you hate Power Rangers because of Ninja Storm, then you punk yourself out of ever knowing the greatness of Lost Galaxy or Time Force.
You can be however you want to be, yeah, but I choose to be the kind of person that would like to see as much greatness as possible before I day and not put on blinders that might keep me from seeing something I love because of some kinda prejudice.