I specified the DE0061 in my 2552 (2017), I might have been the first to do so. At that time no one even thought about the propane fridge vents, at least I didn't. No one at the factory mentioned it and since I might have been the first install maybe they didn't really understand the implications. A propane unit must vent to the outside but a compressor unit vents to the inside. If not used the propane vents are just a gaping hole in the slidewall that lets in outside air. Our first trip we practically froze and I could not figure out where the cold air was coming from. Once I figured it out I built some seals out of styrofoam to close things up while we were on the road.
The vents are still there on the slidewall, but when we got home I just built a foam plug to go behind them and seal it up. At least with the vents still there I have access to the rear of refrigerator if needed. Which I did once when the refrigerator power plug came loose and had to be plugged back in.
Other than the vent issue I am very happy with the refrigerator. It's quiet, cools down fast unlike a propane one and I don't seem to have any issue keeping things cold, even ice cream. If I did it again I would definitely go with a compressor unit again. We have solar panels and have boondocked up to 3 days with the fridge running and still kept the batteries up without generator use. Of course it was sunny.

One thing to consider if you don't have solar panels is that you will have a constant battery drain by the fridge that you have to manage. Not an issue, just something to watch for if you are used to a propane unit.