I can't speak to the history of it, but our 2018 MX has a "hideaway" 2" receiver hitch (the 2" receiver unit is L-shaped and removable from the hitching position so there's less ground clearance issues). It does have some distinct limitations regarding the length of the moment arm of whatever goes from the 2" receiver to the ball or equivalent, so you may still end up deciding that an aftermarket trailer hitch is essential for your needs. It does have a 7-way connector with a provision for a brake controller; you're encouraged to have electric brakes on trailers 1,000 pounds and up so that you're not relying too heavily on regen.
