The hate

I discovered ac valhala when it had free trying for a while in ps4 shop and I fell in love. Bought the game played HOURS I was so excited to see what people think about it but when I search there was so much hate mind you it was my first ac game so I wouldn’t know how the previous ac games worked. My point is the games is not bad and I really enjoyed the story, is it hated because it was not like the other ac games? (Not saying that valhala is a perfect game and nothing wrong with it)