Inconsistency is definitely a personnel problem and a coaching problem. We don't have good depth and we have glaring weaknesses. In some games these get exposed and no amount of coaching is going to cover these up. Pittsburgh was a personnel problem, Kansas City was a personnel problem, etc.
Both of our coordinators are in their first years (full year in Chud's case), they need some time to get the correct personnel to run their schemes. Take away Vontae Davis (which has happened this year) and Monachino is essentially working with the talent defensively of an expansion team (some young players but a lot of aging, average players) and I honestly don't know how he is supposed to make it work.
I also don't understand your complaint. Players easily could have not shown up for the Minnesota game, clearly the players respect Pagano enough to play hard for him, that's still a sign of good coaching and something Pagano should be proud of.
Overall this is a problem where clearly the personnel is not strong enough and the coaching not clever enough, to lay it all on coaching is wrong.