Install glass doors.

Or better yet a smart screen so you can waste electricity even when you aren't at the fridge.

Now one can buy a fridge for thousands of dollars that displays advertisements.

glass provides good thermal insulation

As a barrier yes, but its almost invisible to radiant heat so its a poor choice for a refrigerator.

Wine chillers have glass so they look cool but they need a double pane with a plastic sheet between to keep out thermal radiation.