Interestingly I just watched a funny sketch video about the difference between Australian and US Airport security [1]. Definitely not a serious comparison, I doubt that Australian airports are nearly as lax as the video makes it seem.
I mean, the passing the bag through without scanning is facetious, but Australian (domestic) security is much lighter than the US. You don’t need ID, you don’t need a ticket, and until recently it was only metal detectors everywhere rather than full body scanners.
Also, it wouldn’t be uncommon to joke around (although there are some hard-asses); if they legitimately did recognise a YouTube, I could see them getting a selfie together.
1: https://www.youtube.com/watch?v=XyJ00uqp670