Not really sure hate is the right word but I my feelings about the poor/cheap/low quality gameplay design associated could be loathing.
What they do instead of create quality gameplay situations like say Half-Life were the enemies work together to challenge the player. You can run, jump, hide, strafe it's an actual real shooter.
What ME2 does is turn the game into a shooting gallery. First they turn off your aiming ability by about 50% while your standing up, they remove the ability to crouch to get more accuracy, they prevent you from jumping, there is no strafe moving and they turn down your damage.
Now they do completely the opposite for the AI, as long as your standing they give them all most 100% accuracy and increased damage.
These are no minor adjustments.
I can understand people not caring about shooters, not caring about Coop is pretty shocking I have to admit.
What's happening here is every fight is just basically a shooting gallery, you forced into cover (by low quality design) where all your do is just move your mouse right, left or up or down, it becomes a 2D game.
What I am apparently doing such a poor job of explaining is that they are using 2D game design in a shooter in 2010, that's their whole damn design, that's it.
If bioware doesn't care about the quality of their gameplay or have the talent to design even basic 3D gameplay in a shooter, why the hell even bother?
Maybe I can't convey shooter design issues to RPG gamers, so how about this. Imagine all great RPG makers, Black Isle or Troika your personal favorites who ever they are. Then imagine instead of making all the really great RPGs they all made, instead they made a game like the original Diablo. They say it's Full 3D and Hardcore RPG (even though you clearly know it's not) of the future and ALL their games were going to be exactly like these from now on and forever. No quality writing, no quality story, no real stats, no real class choice.
Would you be annoyed?