Agreed.

At least on my connection, the woman’s face wasn’t readily recognizable.  I would have preferred it be blurred out but otherwise I don’t see how this is “mean”.  Part of the humor is all the people standing around who either fail to notice or choose not to mention it to her.  There’s no reason to think she started vacuuming that way (knowing the hose wasn’t attached), and even though the hose would have obviously been much lighter than normal, it was a lightweight vacuum and the hose alone dragging on the carpet does provide “some” resistance, plus if she’s unfamiliar with the machine she may have noticed little weight on the hose but figured the hose was long enough she just wasn’t yet having to drag the vacuum around…   To me it looks like a simple mistake.  If I saw someone vacuuming that way I wouldn’t think at all they were incompetent unless I saw them walk far away from the machine or physically look back at the machine.

True, but that doesn’t make it any less malicious. 

what harm is this compared to stuff they show on AFV or other video shows? Besides, the woman looks to be smiling once she found out what happened 

Yeah but that doesn’t mean she’d smile knowing it was uploaded onto YouTube.