The term metal elitist is sometimes used by heavy metal fans and musicians to differentiate members of the subculture who display insulated, exclusionary or rigidly conservative attitudes from ostensibly more open-minded ones.
In general, when compared to death metal, the level of musical talent and technical ability required to play black metal is very low. Because the actual music is of relatively poor quality, the appeal of black metal comes primarily from the imagery and larger-than-life personas of the band members.
In terms of vocals and instrumentation, death metal employs extreme brutality, intensity, and speed. Black metal, on the other hand, is characterized by high-pitched screaming vocals, tremolo picked guitars, a lack of bass, and blast beats. Unlike death metal, black metal places more bearing on the mood and melodies.
The reason most metal heads dislike modern metalcore is simply because its metal written from a perspective of someone who knows very little about actual metal.