So why do people mention progression so much in Tyler discussions? He hasn't changed his song topics since he started rapping and lyrically he didn't improve almost at all. His beats have gotten better but it's not that big of growth for a 5 year run. He's not a new cat any more and he's been around for almost as much time as it took Kanye to go from College Dropout to MBDTF.
Also the new album just sounds so awful and the fact that all distortion and instrumentation sounds artificial is the worst.