GR - As defined by Urban Dictionary, a circle jerk is the act where "a group of males sit in a circle, jerking each other off."
Urban Dictionary offers another definition:
When a bunch of blowhards—usually politicians—get together for a debate but usually end up agreeing with each other's viewpoints to the point of redundancy, stroking each other's egos as if they were extensions of their genitals (ergo, the mastubatory insinuation). Basically, it's what happens when the choir preaches to itself.
I can't say that the establishment games press has engaged in the first definition of circle jerking, but I, and certainly Youtube personality Angry Joe, could make the point that the representatives of games "journalism" have engaged in totally redundant agreements of each other's view points, as if they were scared of the reaction from both readers and publishers for disagreeing.