Anyone have or used one of these? automated safety hitch

They like to call it a safety device, and say it is exempt from length limits, but in reality it is either a load carrying frame extension, or a converter dolly. Depends on the judge. If it were permanent to the tow vehicle, it would be a load carrying frame extension, but in their ads they show dropping it with the trailer attached, moving the TV, and recovering it with the load still attached - in which cast it would be a converter dolly.