Dumb logic and pointless argument.
Coker didn't do much because he had been the offensive coordinator since 1995—seeing a team go through probation and rebuilt into a champion over the previous six years, in a completely different era of football.
Diaz rolled in when Richt took over a garbage Miami program and the long-time Georgia leader made it a little less garbage. Still had two four-game losing streaks over three seasons, lost to some crappy ACC teams and went 7-9 after that 10-0 start in 2017. THAT is what Manolo inherited; the exact opposite of what Larry did.
Coker "didn't do much for that team" because it was loaded, mature and he knew he didn't have to—just like Dennis Erickson knew he didn't have to tweak a championship-caliber defense in 1989, but instilled his offense and won a title.
News flash; Miami has been a "freaking circus" for 15 years and Diaz is working with what he has.
Blame him for some embarrassing losses this year—but not a decade-and-a-half of garbage-*** football in Coral Gables.
Give just about any coach in America what the University of Miami had been built into in 2001—and no one was losing—which was why Lawrence Edward Coker won his first 24 games and went 35-3 his first three seasons with Butch's players.
Take away some of those pieces, watch recruiting slip and that's why ol' Clappy was 25-12 down the stretch and amassed a 7-6 record a mere five seasons after that Fiesta Bowl "loss".