I think Kanye's decline started with Ye but people were able to forgive/look past its shortcomings at the time because he hadn't tainted his discography yet
I think that a lot of the shortcomings that we associate with Kanye's current output now is found on Ye, including uninspired production, low effort lyricism and unfinished and rushed sounding songs but as his discography was still S tier at the time people were willing to be a lot more generous with their evaluations of it. If it came out today people would come down a lot harder on things like the atrocious autotune on Ghost Town's first half, the skeletal structure and production on All Mine and juvenile lyricism across the record. Anyone else agree?