A Jack K Rant: Do you actually care if an artist "matures"?

I could give a sh*t if an artist matures. Sometimes it's for the better, but other times not. Nas, for example has definitely matured as an artist, covering much more broad topics in his music that are far more politically conscious. Mos Def (I think) is an artist who has not matured however. He went from Black Star and Black on Both Sides, and went down from there. He hasn't gotten worse, but his music has just become more pop and electric and his topics became things a bit less relevant.