Yes. If you want to get decent tire wear from a WRX then get the front alignment set to zero toe.
I have a stock '03 WRX Sedan. I got extremely uneven tire wear on the stock RE92s. That got worse when I started running softer MXs. Forget the OEM front toe setting. I asked the shop to set the front toe to zero and got more than 30K miles of even wear from the relatively short-lived MXs.
Interestingly, the shop guy said it's impossible to set the WRX fronts to "zero" toe. He said it was not mechanically possible.
Uncle Scotty: I got another alignment done when the new Kumho XS tires went on earlier this month. Here is the alignment printout for your perusal and comment. What do you see here?