Evolve is going to be around for 2 months in Standard. Before it came back, Quest Shaman was the most popular, but not the most powerful deck, and right when it leaves again, a new expansion will come out. Maybe Shaman will still be too good after the next launch, maybe it will completely disappear.
I thought people would not scream for nerfs when they know exactly how long a specific deck is going to stay. Ok, nothing new here, since we also saw decks nerfed right before they rotated out, but that was 4 months, not 2. But I guess to people who play nothing but Hearthstone, having one powerful deck with a highroll element is too much to deal with even for one month.
Maybe someday Blizzard will introduce weekly patches. And then they can nerf everything that people complain about as soon as people start complaining, until we get to a point where Chillwind Yeti is clearly limiting design space for having way too high stats, and should get nerfed to a 4/4 so that other 4-drops can also be viable.
Unless the Shaman gets incredible draw, it's nearly impossible to beat N'Zoth Priest. There's always a hugely popular deck, and there's always a Control Deck that beats it. Everyone cried to nerf Cubelock, then Even Paladin, then Face Hunter, then Bomb Hunter, now Quest Shaman. There will always be an abundance of the deck with the highest winrate. People play competitively, and want to give themselves the highest chance of winning. I wouldn't go play hockey with a stick made out of styrofoam because its 'more fun', and then complain that the other players use graphite... Adapt. Your meme deck is statistically going to lose alot of games. Either adapt to the ladder, or don't concern yourself with winning competitive games. That's all there is to it.