Yes maybe, but who says that with another coach things would be better? What if Guidetti is fired and the new coach wouldn't get along with some players? What shall we do then, say sorry to Guidetti and ask him to come back?
Guidetti is a club coach nothing more.
The point is that his job isn't working out. Some risk would suit fine here even because the present coaching style is already bringing Germany NT down and there is time to fix the things. Guidetti is a club coach nothing more