Mark Teixeira apparently used the firing to Joe Girardi to provide his own negative opinion as to why the dismissal happened. Teixeira softened his words a bit by calling Girardi a good man and a good manager, but stated that Girardi was too tense and did not communicate properly. Teixeira's conclusion was, "...He just wasn’t the best man for the job anymore.”
This would not be an egregious thing to say if Teixeira was a third-party observer or had those "unnamed" sources. But the statements sound petty and ill-timed coming from someone who played for the manager. Of course, Teixeira is on the journalism side of the equation now and no longer a player and such statements can seem to give him "street cred" as an honest baseball analyst.
But here's the rub: Like any manager / employee situation, personalities and styles do not always mesh. If you are a good manager, most will think you are fair and most will enjoy working for you. But there are always a couple who fall on the other side. That is life. Mutual respect keeps those kind of things in-house and discussed privately.
Now say Teixeira did not always enjoy playing for Girardi, which seems to be the case. There had to have been discussions and problems between the two behind the scenes as a result. Joe Girardi never once talked about a personal problem he had with Teixeira. That would be airing dirty laundry and that is what Teixeira is doing here.
Teixeira made several comments such as Girardi managed every game like it was Game Seven of the World Series. And that is a problem? Perhaps it is if you are Mark Teixeira and you have a minor physical problem and Girardi wants you in the game and you won't go. Or perhaps down a run or two, Girardi might suggest the great Mark Teixeira hit the ball the other way to drive in the tying or go ahead run instead of insisting on pulling the ball.
Who knows. That last paragraph was probably just as unfair as what Teixeira said. What Teixeira makes clear is that he did not respect or enjoy playing under Girardi and that's fine. The opinion here is that it serves no purpose other than helping bury a guy who is already dead to say so. What goes on in the back rooms of a workplace should be left there by those who were a part of it.
Since Mark Teixeira is now a "baseball analyst," talking about John Farrell getting fired is fine. Just shut up about Joe Girardi. It's not a good look.