That response is generally saved for you specifically. You constantly call the team manager/general manager/data department a bunch of dumbasses/stupid/insert insult of choice so this leads to an easy retort about how you aren't necessarily smarter than the group of baseball professionals that actually runs the team. You tend to have a bunch of kneejerk overreactions and don't stop to take even a few seconds to ponder why certain moves are made before flying off the handle. The manager in particular has a treasure trove of data available at his fingertips, on top of information from the high performance department, a list of which relievers are available, first hand information from the players themselves how they are feeling that day/in that instant etc.