"no, it is not logical, due to nature of as you described aether, that it forms a flat disk you described. in real nature, spheres would be created as everything tends to equilibrium. disk is not equilibrium by any means. sphere is. please give examples of real world to prove or disprove"
You can't compare apples and oranges. Aether doesn't form a flat disc, the low concentration is ultimately ball-shaped (a hemisphere above and below the disc), though the lowest part is sort or a circle. The issue is that we are dealing with motion, not a physical object. The motion of aether does indeed form a sphere (as you can see from the diagrams, rotating 360 degrees to allow for the third dimension), however there is a necessary impact from the initial shape, meaning one direction is less prominent, causing the disc-shape within.
It would be a ball if not for this extra detail. Much like, under RET, the Earth would have formed as as perfect ball before rotational forces stretched it out. If we waited long enough, it would tend to a disc because it is slowly expanding at the equator. Aether, essentially, moves faster. Yes, there are other forces at play: gravity in the RET case, and the predefined nature of aether in the DET case, but this I hope should at least give you the gist.
Technically a disc is a ball, only in two dimensions. The key is the question of why a two dimensional shape results, and the important thing to do here is to remember that while dust follows the flow it also interacts with other masses, and is not the exact same as aether.
I have explained this multiple times now. If you have an objection, please for once give it in more detail than "You're wrong because it forms a ball." Say, at what point, you believe my reasoning breaks down, and why.