Well, it just means, such idea is nonsense and the idea, both matter, both energy are formed by Aether by the same way appears more relevant. You can consider the vacuum as some special form of matter, or you can consider the matter as some special form of field. The most relevant will be the assumption, both they're special forms of Aether. The material model of Aether just appears more familiar for most people, because they know about matter from its outside perspective well, so they can find a highest number of analogies here. The field and space/time concepts were recognized a much more later. But in fact, just a proclaimed refusal of Aether concept prohibits the science to consider the material concept of field as freely, as the field concept of matter. It's a matter of politics, because the science is supposed "not to make mistakes". Another problem is, the science substitutes a role of religion (or the natural oponent of religion) for many people. Every correction in such fundamental point can impeach the credibility of mainstream science and to strengthen the role of religion, indeed. Which is the reason, such correction cannot come from inside of science. Despite of this, the Aether concept is the trivial and logical consequence of the duality between field and matter concepts and nothing strange is about it. I believe, we can develop the relevant model of Aether composed of matter and energy duality as easily, as the model of Aether composed of space and time (a sort of geometrodynamics theory, in fact). From formal point of view, the formal combination of more complex theories (relativity and quantum mechanics) can be effective as well - but not from intuitive understanding point of view. From AWT follows, these models aren't completelly equivalent and they should be violated less or more latelly as well on background of some chaos based theory - but this is not really the task for single human, who is developing such theories as an outwork, like me. Frankly, I hope, such theory will be developed by more advanced creatures, who will play together better, then contemporary scientists do.