"Fans", in situations like this, typically refers to millions of individuals. Of course there will be differences of opinion as more layers are added. That should go without saying.
This is especially true when continuation is splintered.
Final Fantasy, for instance. Square decided that they would do different things with subsequent releases. That will inevitably cause a divergence of opinion, as different people pick different games in the series as their favorites and least favorites.
It's natural and completely predictable.