I think people are just frustrated. They wanted that wall climbing, flat-head deploying, stealth takedown-jacking, metro-riding, street cred using game. Who doesn't?! There wasn't enough time to make that game, and maybe the balance was screwy ontop of that.
Companies hate saying 'we tried, couldn't make it happen. It was buggy and we couldn't fix it, we probably wasted time trying to make it work.'
They say 'we made a design choice.'
Like when a politician talks. It just runs people the wrong way.
This cut content stuff I feel like is people mourning what could have been. All those things sound really awesome, but maybe they weren't as fun as they sound, or had problems in the engine. Or just needed more time then they had.