The argument they are using is that since the crime took place 2.5 years ago, the DoJ had all that time to prepare their case, while Trump was somehow completely blindsided by this whole thing and didn’t even begin to make preparations for a defense until he was indicted, so they are going to need 2.5 years to prepare the defense.
That is literally the stupid argument they are making. Agreeing to this demand would turn our entire criminal justice system on its head.