I mean, I'd argue it took him two years rather than one to see O'Quinn was a bad special teams coach for us. O'Quinn's special teams units were bad in both of his two years running them for us. The FG kicking unit costing us the entire margin of difference between winning the division and missing the playoffs in 2019 made more people notice, but we had a bad special teams unit in 2018 too.
And for all the talk of how ungodly awful our average starting field position was this year, it was bad in 2018 too (just not so extreme down in the bottom 3 to make everyone stand up and notice).
But, yes, since we grade Jerry on a curve, it's nice that it only took him 2 years to realize something that, in other circumstances, he might have taken 4 or 7 or 10 years to notice.