The Holbo sounds like a reincarnation of the late lamented Maple Knoll turntables once made in the US.
But as to the issue of vibration, isn’t it possible for an air bearing to vibrate due to any pulsatile quality of the air supply? Some air bearings employ various strategies to counter act that issue, or so I thought. (Never owned an air bearing TT or tonearm.)
PS. I can’t understand why the idea to set AS using a blank (groove less) LP will not die the natural death it deserves. The reason it might “work” or appear to do so is in my opinion because setting AS is such an inexact science to begin with.

