Everyone makes their own choices and lives with them, I guess. I would not be without a propane fridge.
Leaving aside the questions of the appropriateness of running propane while under way, there have been many occasions where I have been parked temporarily with no shore power available and needed refrigeration. Grocery store parking lot. Stopped for lunch at a "day use facility" as the state calls them here. Coffee with friends who live halfway between points A and B. In the driveway by my house for 4 hours while getting ready to leave, sure I could plug in, but extra hassle.
I am presently parked long-term (8 weeks) at an ersatz campground and spending 3 days there, 4 days in my stick house. The shore power is 20a and is over 100 feet from the trailer. There are over 100 other rigs. I know that if someone trips over my shore power cord or whatever that the propane will kick on and run on battery until I get there and I won't have a stinky mess.
And, I've done some boondocking, which I didn't really anticipate.
So, all in all, I'm glad I have the propane fridge, and wouldn't be without it.