I must contradict anna v and acouriousmind.
Firstly, I agree: The physical everyday work is determined by experiments and calculation and not by interpretation.
But we sent out physicists to come back with results. Certainly they shall calculate, apply rigor, but do not forget the reason why you are working! The KISS-(keep-it-simple-stupid)-argumentation confesses incapacity and seems to be an attempt to dispense physics from its initial task.
Knowledge is not only the physical experiment and the physical calculation but also their corresponding interpretation. If you would remove interpretation (and in particular: Copenhagen interpretation) there would be left a gap. Interpretation is not only needed for the public but also for other physicists which are working on other topics. A gravitation specialist needs an idea about quantum nonlocality, even if he is not following the same physical concept.
Copenhagen, many worlds, hidden variables and guide wave are more than simple speculation. Each of them is one view of one aspect of quantum nonlocality, and they are probably complementary, each of them including one part of the truth, which we are not able to find by experiments. They have been developed by the most competent physicists, and they have been maintained for many decenniums. To say with a handwave that they are not part of physics seems to be rather shortsighted. Without these interpretations no substantial knowledge about nonlocality would be left.
In short: Sometimes we can say "B follows from A". But sometimes our knowledge is only: "B seems to follow from A" or even, in the worst case "One possible explanation of A might be B". These are no empty phrases. They are part of physical knowledge.