From Blaseball Wiki
Minimized is an Item Modification first seen as a result of the Season β23: The Iffey Jr. Blessing in Season β23.
Minimized sets a Player's Attributes to 0. Notably, these attributes usually have a floor of 0.001, but Minimized surpasses the floor to set the number to exactly 0. It is unknown what it does to "inverse stats" such as Patheticism and Tragicness. It is also unknown if the Modification prevents Players with it from improving.
Despite the original Iffey Jr. first existing in Season β7 after Modifications were first introduced, Minimized was not actually seen until the lookalike offered as a Blessing in Season β23. The Miami Dale won the blessing, with the new Iffey Jr. going to Jode Crutch.