Do equipment stands have an impact on electronics?

I also have a Star Sound rack. Also several of their cones. Very rigid and heavy! All of them sound different. The MIG supports work very well. 

All isolation devices, not Star Sound products

We know how to remove interfering energy without removing needed polarties of shear as does your product and like designs. We keep the good because they are required for accurate reproduction. Your designs create a mechanical barrier on which any voice coil loses articulation while trying to overcome your materials of cancelation.  Tom. Star Sound

Motion artifacts can be seen as well as heard. Maybe you cannot seem them in the video link because you didnt look or there are none there to see..Tom. Star Sound

The audio weak,

Speaker feedback is not a problem only if the audio engineer is smart enough to employ isolation. Otherwise some feedback is inevitable.

The video you provided shows how someone can perform the water in the glass experiment incorrectly, although I have to confess I didn’t think that was actually possible. The lemon, ice and stirrer damp the vibrations that might otherwise appear and the glass should be filled to the brim since the ripples appear in the surface of the water. It’s not rocket science. At least you tried. Lol

helpful hint: the ripples that appear on the surface are a little subtle, it’s not like water is sloshing around in there although someone might be sloshed.