I don’t know what you’re talking about. My fridge is in the kitchen and runs whether I have a couple of plastic jugs in it or not. Like I said, it worked great for me in my shop and if I was dealing with being unable to sleep, I wouldn’t hesitate to set it up in the bedroom where I don’t have a fridge.
If you’re willing to put up with a warmer kitchen, in order to have a cooler bedroom or cooler shop, great. I’m just noting that it will be hotter wherever you make the ice. The refrigerator will run longer and harder while it’s freezing the ice. Because it’s not 100 percent efficient, it will make more heat energy than you gain in cooling from the ice.