No, not in itself. I resent the bullshit that's come in the wake of each walkout.
In the first case, he walked when the transfer money ran out. In the second case, he walked when he realised that he wasn't going to change the owner's policy and get him to spend - the Gonzalez issue gave him the opportunity to go with his nose clean.
And of course, with England he was a failure because there's no opportunity to spend money. You have to work with what you have.
Keegan will always have a special place in the club's history, because he was the catalyst for changing the club's thinking from small club to big club. Unfortunately, he didn't have the all-round ability to capitalise on the opportunity that - in fairness - he largely created for himself by hauling the club's ownership in the direction that he wanted.
Are you special needs?