Some electronics have a way to test the system if the speaker is functional and can potentially kill the system, so that’s not even remotely true. Also, maybe they have to manually check the pump every morning when they turn the pumps on as part of their start up process.
You are a fool if you think stuff isn’t able to verify and test itself in todays age or they don’t have an employee checking stuff semi frequently…
In either case it wouldn’t be hard to go through a days footage, even easier if the system self tests and tells you when/if the problem occurred.
I’m sure most people who would put this to test would strip that data or screen grab the image to do the same thing…. If you know about meta data, so does a large amount of other people mate…
The people would be labeled as a fraud very fast if this wasn’t actually a real thing dude.