All I can think of, is that if one is in a wheelchair and someone is next to you getting the picture taken, touching could happen that was inadvertently done.
Just saying that, no one has brought that up, especially if it is with a frail old man. The off-color joke though, leaves some smoke in the situation.
People have said something about a youtube video, but without a video, a link, a story or something, that’s really hearsay (if not slander). I saw nothing over there on this but it’s a rather broad search for videos.