To dismiss, outright, an entire product category which many music lovers consider essential to their enjoyment seems a bit extreme. Have you never heard convincing vinyl? That seems incredible to me. Or are you simply trying to be provocative?
As an industry expert at vibration control, you are missing a huge market opportunity for your products. Or have you already compared your devices to those made my Vibraplane or Herzan and others?
As Bruce said above, the TT is arguably the most sensitive component to vibrations. No argument there whatsoever. By and large, TT mfg'ers have gone so far down the "isolation" path which is completely contrary to my own vibration controlling methods. IOW, I never use the phrase "vibration isolation" in a positive sense.
Hence, IMO, a TT's potential performance compromises are simply overwhelming and not worth my while. To me and apparently to me alone, for the most part TT designs (as cool looking as some may be) are equivalent to a boat littered with holes. You can plug up the holes with one or numerous methods and the boat may still take you to the other side, but at what price in the way of performance and enjoyment?
Have I never heard convincing vinyl? Well, I've visited plenty of homes, dealer showrooms, and attended and exhibited at a number of audio shows and I easily can say I've heard reasonable vinyl on a number of occasions. But reasonable and convincing have two completely different meanings to me.