Rush does a radio show. Do you understand that "visuals" are not a part of a radio show? Yes, there is a web cam for subscribers, but that is not the thrust of what he was doing, nor was it for "public consumption," by definition.
I do not have access to the "dictocam" (or whatever it is called) and do not know if he did it....IF he did it was in poor taste.
I find it interesting that you choose to call it a "dictocam" instead of dittocam. Sounds like you have some issue with Rush or an agenda here. The only way you could have heard about Rush waving his arms was from the drive by media and the only way you would see it as making fun of Fox's ailment is if you were simply repeating the spin spoon fed to you by them. He was illustrating the types of motions he meant for those who did have the dittocam, not trying to mock them. If you heard what he said then you know when he did this and you would not have any trouble distinguishing fact from leftist hate speech.
Step out of the DBM news bubble. If they say it it's probably a lie. Words to live by.