Why not just turn off your camera? The blurring tech doesn't seem nearly reliable enough for me to trust it if my "office" was that much of a catastrophe.
Yeah this should be obvious. I think video calls are a waste of time the majority of the time but one legitimate use case is where there's an issue which doesn't seem to be easily resolved using written media. In this case it's useful to have a video call where you can gauge someone's reaction to specific things you say. That way you might be able to get to the gist of where the miscommunication is happening. A dildo in the background doesn't add to this (although a bunch of empty vodka bottles might gives some clues), while seeing a person's reactions to statements/questions might.
