Regardless, that average people are cautious about their electronic privacy is something to applaud, not discourage. If you are trying to train people out of fearing their cameras, then you're doing a bit of a disservice.
In particular, your claim is false for phone and tablet cameras. These devices do not have visual indicators of camera operation. Furthermore, the only reason for an industry-wide adoption of laptop camera LEDs was consumer fear of them. If that fear erodes, there is no incentive to maintain the hardware feature and no governmental regulations governing such hardware.
