I've watched 85% of KN's games in charge of Notts live, so I'm confused as to why would a negative opinion be "knee jerk"?
There's a long list of reasons which are now adding up to him needing to go.
KN has told us he is (was) happy with his squad. This is a squad where Duffy & Brisley are backed up by an inexperienced loanee and an even more inexperienced kid we got from Dunkirk. I don't know how you can describe that as anything other than mismanagement at this level.