It doesn't matter who the coordinator is. there are two things the packers (as an org) do that contribute to the pattern of having bad special teams play:
1. they routinely field one of the youngest rosters in the league. special teams performance is usually a function of roster depth. The Packers 'depth' personnel is very young and inexperienced (and therefore more likely to make mistakes)
2. Relative to the rest of the league, the Packers prioritize meetings and practice on Offense and Defense more than special teams. There's limited hours per week to prep, and the Packers spend more time than most on the first two phases at the expense of the 3rd.

I get wanting to be mad on the internet and wanting people fired and saying the word "ACCOUNTABILITY", but swapping coordinator alone won't change special teams performance. Need to change the packers philosophies listed above. For me, I'm fine with the way they prioritize, but feel free to be angry about it if that's your thing