On the other hand, if he leaves the financial side of it completely to his wife, which would be in character in terms of laziness, then she being a very cautious and risk averse person as she evidently is, then perhaps it is a fair reflection of the financial situation.
He controls the finances, there is a video where he is chatting to the camera while they are driving to the supermarket. When they get there he talks to her about money (I think he gives her cash). I also know for other reasons that this is the case.