Having a personal preference is by no means a bad thing.

There are many, many Zelda fans who don't like all the games, but that doesn't mean they aren't Zelda fans. You don't have to like everything about something in order to be considered a fan.
For example, if I like Justin Bieber's My World, but not My World 2.0, that doesn't mean I'm not a Bieber fan. It just means I like some of the songs by that artist, and not others. I'm still a fan of something he's produced.