Yes, but with an addendum:
If an early getter decides to get the game and praise the game, fine. Let him. People can see how he's enjoying the game and might feel elated to buy the game to experience the same thing. Heck, if the pirater is enjoying it, it leads to buying the game(in some cases, I understand it's not everyone).
If an early getter decides to criticize the game, then he must post a warning that any problems he has encountered with the game may be a result of pirating the game. No-CD cracks, security workarounds, all of those may cause issue with the game. This is necessary. In reference to the old THQ game Titan Quest, they had a security feature where they checked for legitimacy at the first dungeon. If you did not have a legit copy, it would just boot you to the desktop, no warning. As a result, piraters complained about "random crashes" and it killed the game's PR. If piraters want to criticize the game, they must indicate that they have pirated it. If they don't want to indicate piracy, but still want to criticize the game, then allow reporting him for fraud and someone jumping on the bandwagon of hate, regardless of whether he actually pirated the game or not(since it's impossible to tell).
In this way, you take the title of pirater, but can give your evaluations on a game. Or, you can avoid the title, but must shut up about the game until release. The question is whether your influence outranks how people interpret you. This is the best system I think.