Device has taken ill and is not actively playing CSGO for Astralis right now. Astralis have been using several stand-ins during their last few tournaments. This basically means that Astralis have been playing with a sub-par team roster. Despite the lack of Device, one of their star players, Astralis have secured final finishes in several tournaments.
Xyp9x believes that without Device, Astralis might not be the best team and playing upto their potential. Xyp9x also has confirmed that they themselves are not sure if Device can make it to the Major. The Boston Major is set to begin in about 30 days and Astralis are one of the top contenders.
Source : TheScoreEsports