If I don't like a genre or a game why would I look after reviews to cement that view when I can use my time in a much better way playing what I like?
If you don't like the genre, hate the type of game, then your score is born from hating it. Just like the gal that reviewed GT5 and her main reason for a 4/10 was "what is the point of running in circles? Despise being pretty this game is really boring".
But surely enough if you are looking at exclusives you may also ignore the magazines that are attached to the brand to also avoid overly positive reviews... but in a case like HZD a 6/10 is a troll even if you go there and justify "it is cogent and artful". There were justifications on the 6/10 with "this perfect part here Witcher was doing before, this other great part over here GTA have done, this amazing section Assassins Creed done", so the game was reviewed as almost flaweless, but got a 6/10 because aspects of it were done in other games, that doesn't seem like value added at all.
Try to read what you're writing. You say that if someone hates a type of game, then his score is born from hating it. Well, then if someone loves a type of game, then his score is born from loving it. How is that any more objective or legitimate? It's not. It just means a higher score.
This isn't about journalistic integrity or due process. It's about marginalizing negative reviews so that your favorite games will secure high scores. You're part of the problem, I'm afraid.