Bragging about taking drugs, money, shooting, fawking bytches are not unique to any genre of entertainment because it's not unique to any group of people
From old school to new school rocknroll, mex bands, country, dancehall reggae, and rnb all have music artist that directly and indirectly talk about those subject matters
Once you step in the booth, then your purpose is to sell, not to snitch on yourself. So bragging about the same subject has more to do with the perceived sells, than to do with those mundane subjects