They are but pressures aren't worthless. A sack never leads to an interception. Never. Pressures do.
A sack is a single loss of yardage and down. Frequent pressure throws a QBs whole game off.
With the quality of QBs in the league many of them shrug off sacks. Look at Russ Wilsons record despite his sack numbers. Kyler has frequently extended drives after sacks this year.
Yet pressure both Russ and Kyler consistently and your much more likely to beat them. As the Packers did on Thursday.