How come you cannot grasp the similarity? Eliminating the luminousity feature of aether of the old, we have the same banana in the revived aether of Dr. Einstein. All the added features of Dr. Einstein would fit in into the same aether, old and new.

See

a significant event for physics in November 1915 that had led to the current definition for

spacetime in mathematical relativism, this is the famously known "

Einstein–Hilbert action" that was established in

proof theory.

The current dominating thought in definitions for spacetime in modern physics is entirely different from the classical aether, and eliminating the luminosity feature of aether is a strange proposition that is kind of attacking the straw-man in classical physics that is not relevant to modern physics definitions for spacetime at all.

Einstein had an

æ-theory, this is the Einstein aether theory that describes a spacetime endowed with both a metric and a unit timelike vector field named the æther. In particular this theory has a preferred reference frame and so is not

Lorentz covariant that had achieved scientific consensus.

Make a distinction between the original spacetime defined by Einstein that is aether-liked (I can see you are going in this direction but somehow you did not focus on this), from the mathematical relativism defined spacetime that is widely accepted in modern physics, then people will not think that you are confused and have misconceptions with the classical aether and the modern physics spacetime. You could then narrow down your arguments that is propositioned for the Einstein's spacetime that is against the spacetime of mathematical relativism, but how you carry out your arguments and are your arguments valid or not would be another issue.

However, imho, your sticky argument on eliminating the luminousity feature of old aether to posit this as the new aether and this is the same entity as the modern physics spacetime would get you nowhere.