We realize it's not a common scenario, but even if it would work once or twice per year, it would still be saving you from a very awkward situation, thus the value we see in this.
https://www.independent.co.uk/news/world/europe/councillor-s...
Unfortunately he believed minimizing the app would cut the video.
Otherwise politicians are going to keep showering on camera during meetings, instead of showering off-camera during meetings, like they're supposed to.
On Linux at least, if you open the v4l2 device for a device like this, it will turn on the indicator directly, and I don't think you can attach to it with libusb while it's otherwise in use by v4l2. In practice, I think the worst you could do from userspace on Linux is show the indicator while not recording.