Lyricism is far from dead, the three biggest rappers are Kendrick, Drake and Cole.
Even that dude Logic is spitting bars, he's probably Eminem with substance to these cac kids.
Music is just a lot more diverse now, there's a lot of people focusing fun rap, a lot of people focusing on bars, a lot of people focusing on club music and on. It's cats out here who choose to focus on all these youtube acts moving zero records.
I always hear these old heads on Drink Champs and shyt talk about mumble rap, never hear them mention Chance, Vince Staples, Tyler The Creator, Joyner Lucas, Noname Gypsy, Danny Brown, Asap Rocky, Isaiah Rashad, Schoolboy Q, Action Bronson, Earl Sweatshirt and on.. Always these "Mumble rappers, that's all they listen to". People talked about Yachty like he was the new Jay, then Logic did 4x his sales first week, old heads; silent.