This move by DHL should be taken as a sign that the Dalai Lama and the CTA need to stop discriminating Dorje Shugden. In a way, it actually does make a bit of sense that DHL compared the Dalai Lama to Adolf Hitler, seeing that both of them limited religious freedom.
Besides that, how is it "shameful" for DHL to stop production of the stamps? It is up to them when they want to stop production, obviously they can't just keep printing these stamps.