I have no surprise. I would expect as much. Here's some more shockers... sometimes when you see coffee cups in TV shows and online videos... there's actually not coffee in them. This was confirmed by my contacts with direct experience. They even pretend to drink them! Now ask yourself, why would they try to deceive us like that?
Not only would I expect a video crew to fake the injection, I would be surprised if the people are actually nurses or doctors. I know it may be shocking, but sometimes the firefighters and doctors and superheroes and step sisters and such in that you see in videos are just pretending! They're just actors!!!!!
Seriously though I used to know a pro photographer who had lots of cool stories about shooting car commercials where the car was actually a cardboard cutout, or things like that. According to him, the pancake syrup that you see in commercials or even on pancake syrup labels is always motor oil. Real syrup runs off and soaks in too fast. So if you did actually shoot a photo using real pancake syrup, client would probably think it looked fake.