You fly as a Merc in previous AC games. I don't get what this reviewer is going on about. So what, being a mercenary in a video game is bad now?

Bravo, game journalism. Bravo. How much deeper does the rabbit hole go? Pretty soon you'll be shitting your pants when you see a murder a in game?

ACI isn't perfect (or great), but pinpointing 'being a merc' as a flaw is like saying a 'straight white male' lead character is a flaw. It's something minor, and stupid for you to complain about.