LED replacement bulbs are a common problem. The beam dip is designed around a single element. However, LEDs can't produce the intense light of an incandescent or halogen type bulb. To compensate, they use an array of LEDs. This creates a large emission surface. Some of the surface is a significant distance from where the element used to be. This completely messes up the beam shaping, throwing light where it shouldn't be.

Combine poor beam forming with higher vehicles, and higher outputs, and LEDs get a very bad rep.

A properly designed LED headlight has far less issues. Unfortunately there are a lot of stock units which also have poor designs.