Factory trailers tend to be positioned for "Typical" family station wagon (remember those?) or mini-van bumper heights.
Most trailers also expect (and need to be) to be trailed very horizontal.

Thus must SUV's need to drop their hitches down to reach the trailer's height.

Some of us have lifted their trailer's suspension to reduce the drop required. Others add a lifted tongue to their trailers.

Boat trailers are especially sensitive to horizontal loading. If you reach the trailer's tongue up too high, the trailer becomes very front-light, and that makes for interesting hitchup exercises (done once, and never again!)

...rambling.