Mostly because it's perceived to be a blatant rip off of Creed's Millesime Imperial. Many here have some disdain for people who basically copy another company's successful scent. In the case of someone copying a very expensive scent, it can give the impression that the user is "posing," buying the cheaper scent but claiming to wear the more expensive one.
It's a lot cheaper than Creed and not everyone hates it. If you like it, don't worry about it. Wear it. At 17, you need to watch you money.