The First Reason is he has undeniable speed and flow in his raps, some of the best examples of this is Rigamortus and Collard Greens. Another Undeniable Reason is he is amazing at Hiding Easter Eggs in his songs and disses Which we will talk about later. Some songs Have extremely deep meaning farther than practically any rapper and he isn't very cocky like most rapper he is "Humble". Some songs that have extremely deep meaning are, The Art Of Peer Pressure, How Much A Dollar Cost, u, and the king of deep is Sing about Me, Im dying Of Thirst.
Kendrick Lamar