Fans are frustrated with Archie Bradley right now. A former top prospect, Archie never really found his groove as a starting pitcher and was eventually relegated to the bullpen. In 2017, he was very good as a reliever - a 1.73 ERA over 73 IP, good for 16th in WPA among relievers and 7th in WPA/LI (accounting for leverage).
However, things have only gotten worse for Bradley. As Jack Sommers recently noted, since July 10th, 2018 through today, here are Archie’s numbers:
46.1 IP, 5.83 ERA, 4.11 FIP, -2.85 WPA, 18 shutdowns against 14 meltdowns
Those are not good numbers for a reliever, let alone your setup man and/or closer.