Samsung Game Streaming Service, Activision-Blizzard Microsoft Deal Closing, Should Game Fatigue Impact Review Scores?

Samsung's game streaming service beta for their Game Launcher is coming to an end as it prepares for release. Microsoft's massive Activision-Blizzard deal finally looks like its coming to a close. Should game fatigue (ie too many games in a series that feel the same) affect game review scores? How are review scores impacted by reviewers that have experience with a like-game, versus those that have no like-experience?