Parka makes you warmer, wearing a parka indoors will make you overly warm.
Insulated container helps cold things stay cold, and warm things stay warm. Putting them in the fridge does not make the food get too cold, or too warm.
If you dont have room in your work fridge, then fine. You have a point on that one specific thing. If there is room in the fridge for this to happen, then its just saving people time. Why care?