Ok, I have found one rational reason behind this act of craziness, the"why was this not announced" thing. It would be a bit like announcing in a public place that someone there forgot to lock their door and then shouting out the address of that person, the person in question might hear, but they would have to race the would-be burglars back home to lock it, same here, announcing it would cause chaos. Of-course the right thing to do would have been, literally, nothing, because by removing the option everyone has been let aroused anyway! If you had neither confirmed nor denied that would have been the right thing, rumour would have spread, and been widely debated, and people would gradually act accordingly to whether they are paranoid or follow the truth of the facts and figures and go for publicity despite the risk.
Honestly though my decision remains the same, the option needs to return, and even with a warning I will continue to use sketchfab. I respect my customers ability to know exactly what they are getting, and like working with sketchfab more than any other model viewing site ive tried.