While I would not deny that there is scope for some more public investment in infrastructure or education, it is worth noting that fiscal policy in Germany is already in expansionary mode due to the cost of accommodating the refugees while the long-term sustainability of public finances calls instead for Germany, with its demographic burden, to run a structural surplus.
Clearly, what is implied is that the whole world going blind is not a desirable state of affairs. One might take umbrage since it suggests blindness is an inferior state to that of being able to see, and the saying could be seen as discriminatory.