Angre Birds is really good, people hate because it's casual.
This. It's one of the better mobile games. It's just too casual for some people and it rustles their jimmies.
Of course I don't play it anymore because I'm not going to drop $5 for every re-skin they release as a new game
I stopped playing over a year ago, but I beat hundreds of levels before finally getting bored.
The average hardcore gamer likes to feel special because he's playing games most people don't even know that exist. They don't want to play stuff their grandparents are playing too, even if that stuff is fun. They want to believe their tastes are superior to everyone else's.
If you think about it, the average hardcore gamer is a hipster teenager.