My limited experience on a 2017 yesterday…
Side clips came off easily using a small flat screwdriver.
Wire removal inside also easy.
Pushing the wire back on - not so easy.
These are sometimes called “speed boxes”. There is a special tool that installers use to quickly push the wires onto the grippers without the need to strip the wires. Also no need to cut the wires when daisy-chaining to the next outlet. I believe they are illegal in residential construction in many states. There is little contact area between the wire and the outlet.
The outlet box at the television had just one available outlet. The other one was blocked. I ordered a new speed box with two open outlets but couldn’t get the wires pushed in. Finally gave up. I installed an “old work” outlet box with a normal residential outlet except the outlet also has two USB ports. The most difficult part of the job was enlarging the raggedly cut hole to accept the box. The hole was obviously cut by a chimpanzee using a sawzall or, perhaps, a chisel. I wondered why the hole wasn’t cut on the CNC machine when the panel was cut. But maybe Airstream hasn’t heard of CNC machines. The multitool did the trick. I was very careful because messing up on that paneling wasn’t going to be fixable like messing up on drywall (Sheetrock) at home.
Using an old work box requires having space behind the wall to accommodate the depth of the box. On my application, it was a big empty (wasted) space behind the fridge.