So 6 months is enough time to judge, i bet most wasn't saying this when AVB got just over 6 months at Chelsea? Rafa wasn't given a chance because he is disliked, always has been and always will be.
Your squad whilst he was gaffer was shockingly poor, the previous manager/board sold two of your most influential players (Alonso and Mascherano). Roy was given the task to try and steady the club and lets say maybe a stage of transition which cannot be done in just 6 months. As much as you hate to admit it at big clubs like Liverpool are as much as the fans say at the start of the season "we will back z manager as we know we are building for the future" a few poor results follow a run of decent results which the fans thought "maybe we are back already" and expectation sets in.