Corpsey
bandz ahoy
It's that trap music thing. That whole "I'm a gangster, not a rapper" shtick. The less thought and effort you put into your music implies that it is only a side hustle to your main hustle of selling coke or whatever. Made popular by Young Jeezy, Gucci Mane, and similar artists from that whole wave of rappers out of the South. I imagine these guys have "dropped the ball" because they are inspired by that style.
This is what I was saying about road rap, didn't see your comment before. I love Gucci and Jeezy though. Maybe I have an anti-UK-MC prejudice.