I always feel that "absolute vacuum" is a disaster to theory developers.
However, mainstream followers just bootstrap equations of mainstream theoretical physics. They simply take spacetime as in-between the entities of matter-energy. They follow physics textbooks to say that
spacetime continuum and
quantum fluctuations in space as the phenomena of vacuum rather than of ether. They forget that vacuum should means emptiness (empty of any physical continuum [including spacetime continuum] and fluctuations) while ether is a physical continuum [though non-material].
(Is spacetime a physical continuum or not physical?)
Actually, those physics terms like: field, quantum fluctuation, loop quantum, spacetime continuum, wrapped spacetime, dark matter are more ether-like rather than vacuum-like.
People say that Einstein's Special Relativity overthrew ether. However, it is in Black and White with a book written by Einstein
(with pictures
http://www.helical-structures.org/Ei...relativity.pdf )
mentioned in a web page
Einstein conclusion about the existence of Ether after he developed the General relativity - a fact missing in the scholar Physics textbooks http://www.helical-structures.org/ei...bout_ether.htm
Please have a look.
Best Regards. Bottomlander