I first flew EK to Melbourne from LHR back in 1999. The standard of service the crews provided then was of the highest standard. Today in my view it still is. The only thing that has changed is the product they provide. The meals seem to have got smaller since then. That is not the fault of the crew. They are told what to serve and probably how to serve it. EK provide crews from all over the world and generally they mix very well with each other considering the different cultures.
Politics and religion however are something completely different and shouldn't be brought into the cabin.