I mean at this point id say a lot of these rappers definitely did crime at some point and then got out of it by becoming a rapper.

The question is does their culture dictate the music, or does the music dictate the culture.

What they rap about and portray is black people in america. If they as a community changed their ways and fixed themselves maybe the music would change aswell. If it stayed the same then it absolutely would be 100% fake.