When I say Mages have it easy, I mean their base rotations are far easier than a lot of classes, regardless of spec. The hardest rotation to pull off for a Mage is Frost, and in reality all that is in managing 1 debuff on the boss and then ensuring you use everything else on cooldown and can manage procs. Compare that to more complex specs like locks, shadow priests or even boomkins.
Sure, we are pretty much the only class that is 'restricted' by their 90 talents, but I wouldn't go as far to say as it feels like we're getting screwed over. As a class we're still the top damage in single target situations and most cleave situations. Yes the talents are clunky and awkward at times but there are also some fights that they are VERY well suited for exploiting, so there are still positives there.