I know I'm going to sound like a Buzz Kill here but as a former Survey Pilot this sort of thing worries me greatly, I remember the job being hard enough to see and avoid whilst doing your best to keep on track sometimes in turbulent conditions with normal GA traffic moving in predictable tracks, Training Aircraft were usually my biggest concern as they could often be out Solo and uncertain of their intentions (like we all were back there) and it's hard enough in general to describe what we're doing to people let alone someone doing their best just to get from A to B. Knowing there were people out there doing this sort of thing for the sake of showing off does not help that feeling of concern.
I honestly don't think this is something that CASA shouldn't be stepping in on (Though this young bloke/blokette shouldn't be surprised if this raises their ire and I think posting it on social media is a huge mistake) but I certainly hope the CFI and/or CP give them a kick in the ass for this and they think twice in the future, it certainly isn't a good look for their Students who may seek to one up or mimic the behaviour.