To me,it is not an issue of what seems correct on paper. If one is so critical as to be concerned about the minutiae of cartridge/arm issues,then being careful about what table topology you buy,is a good thing.
As to the why it "may" be a big deal.....just some thoughts,which a new table purchaser should "think about",before making a decision....From the arguements made in favor of an "effective" suspension system,on a table,the subtle sounds of "any movement" can be picked up by the finest cartridges/systems.This is indicated by not only footfalls,but the vibrations of many "real world" occurrences.A truck,airplane,or any vibration that can cause the slightest impact on the "super sensitive" vinyl replay system(in a normal home,even the general outside world's "sound" is vibrational....listen at night,not to music, and it becomes obvious...things are just much less noise/vibration sounding)....Having a concrete floor(I do too)is still not totally effective for stopping these deliterious effects.My friend has a concrete floor,but can pick up the vibrations of his elevators,and other causes in his apartment building.Noisey neighbors,furnature moving,someone wheeling in groceries etc are all present in an apartment building.If you claim to have a fine system,you are picking up the effects,whether you like it or not!One family homes are not immune either(I have one and know this to be the case).
I had a non-suspended table,on a specialty wall shelf,drilled into two by six inch beams,in my wall(dedicated room).Fine,but there was still the subtle vibrational energy coming in when a large vehicle,or plane passed by.Even the effects of my room's exhaust fan(on the roof)caused some degree of vibration,which I felt(slightly).Washing machines,vacuuming(don't laugh),furnace kicking in etc....you may not be aware of the subtle impact,but it IS there!
Of course I am not saying "these" can easily be detected,during LP play,but It makes "sense" to me,that if the vinyl set-up is SO good,to have expensive cartridges/arms/electronics etc,and "is in a quiet room",then there IS going to be a difference in the perceived sound,based on the "better" table topology!...
I say,try to read/educate oneself to the topic,consider your own system/room,and make the decision which is most logical to you!
Somehow,I cannot believe a table like the Walker would sound anywhere as good as it does(though I am sure it still would be acceptable)if the "air suspension" was omitted.
Personally,I could easily live with,and love many non suspended designs,but the suspended arguement makes the most sense to me...in a very revealing system.Some set-ups are more revealing than others,so this might not be a "big deal" to some.....I agree!
Best.
