I have no doubt the offensive coaching was a lot better than it was, but even in that personnel grouping you're counting out Kenyan Drake, Damiere Byrd, Pharoah Cooper... all guys who played significant time.
seriously, Byrd and Cooper were street free agents
I guess we have blocked it all out -- but the 2018 Cards Offense wasn't just bad for last year: it was one of the worst in the last 30 years of the NFL.
its finished last in total yards --- and nearly 20% lower than the 31st ranked team.
it didn't just improve this year: on points scored, it was actually better than the average NFL team (barely better, but still)
between KK and K1 --- something happened that made that change.