I think it's perfectly normal and acceptable to be a fan of something and still not like every release. Music, movies, books, games.

I haven't really liked any Final Fantasy games since 9. 10 was meh, 12 eh, 13 bleh and 15 was actually better than expected. I still consider myself a fan even though I haven't liked much of anything squeenix has done or plans on doing.

Same goes for books. I love Cormac McCarthy but Blood Meridian was a fucking chore to read. I may have even given up on it.