even as a fan of an actor, i can still choose to drop their drama halfway through if it simply isn't my taste. i'm quite picky. more than the actor, i tend to judge a drama by its plot & execution, and i don't think there's anything wrong with that.
everyone has different preferences. the problem begins when people treat their own preferences as the only correct ones and judge others. if i don't like a drama or an actor’s acting, i usually choose not to talk about it publicly.