I am intrested why we streotype people according to thier music choise, is that really reflacting who they really are?

Like if the person do listen  to rock music is a dark person and usually bad or the person who soft music are usally romintic ?

From a prsonal point of view I like people who has different test of music from my own

But why still we streotype people people becaouse of thier music choise?

can any one tell me the real deal