Fridges use a condenser not a heat pump.
https://learn.apolloheatpumps.com/heat-pump-vs-condenser/
I've seen some online sources that don't understand the difference, but any engineer in industrial heating will tell you the same.
Heat pumps can only function efficiently in temperate climates and require the user to have additional equipment (boiler, on demand, etc) to heat water.
There are no free lunches in thermodynamicss.