Love the idea! It’s a nice reminder to the casual onlooker that, yes, the average person does constantly point a camera at themselves and it can be exploited. It can even be a conversation starter with anyone bothering to ask.

That said, yes, I have a fair amount of trust that the cameras built into my devices are not constantly recording and phoning home. Not due to “privacy settings” though, which are often little more than privacy theatre. The devices in my household all run on GrapheneOS and Linux, and I monitor my network for unwanted traffic. I also do not run any software inherently hostile to privacy (e.g. anything by Meta or Microsoft), unless properly sandboxed and cut off from the internet. There’s a (very) German saying that goes: “Vertrauen ist gut, Kontrolle ist besser” - Trust is good, but control is better.