My take on that is that they're different situations because a CCTV camera has 1000s of hours of footage to scrub through and will likely only be looked at if/when something bad happens. Whereas the guy pointing a camera at me probably only has a couple hours which means I'm likely relevant to the cameraman (ie, I'll go into that final video) whereas I'm not that relevant to the CCTV.

I know more recent cameras are using AI analysis to constantly track and catalog people which is more worrying but the old school surveillance cameras don't bother me as much.

I like the OP's idea for an art project more because it's showing your what is really happening (rather than convincing people that filming someone on a 4k camera is the same as CCTV surveillance) - CCTV cameras are constantly monitoring and many can be publicly accessed.