I think it's because in the black community, he damn near seemed like a leading man growing up watching his movies. Leading man may be extreme, but he had some really good roles in the 90s where he played a prominent part.
However, it's apparent that whites just don't view him that way. They just view him as another expendable black actor.
Actually in the 90's I didnt see him as a leading man. The 2000's and 2010's did that for me. Movies like Hotel Rawanda,Talk To Me,Miles Davis biopic.