yes the creative spirit of hiphop certainly met its demise some years ago. which is why you're seeing a lot of these music trends/phases in rap. 1 person makes something new and fresh and 10,000 other artists bite it.
The wrath of God is being revealed from heaven against all the godlessness and wickedness of men who suppress the truth by their wickedness, since what may be known about God is plain to them, because God has made it plain to them. For since the creation of the world God’s invisible qualities—his eternal power and divine nature—have been clearly seen, being understood from what has been made, so that men are without excuse. (Romans 1:18-20)