Some of the LinkedIn Responses are direct and on-point, and also hilariously/depressingly based depending on how you look at it:
EDIT: In hindsight, I think I should've looked into posting this in a different community.. It's closer to a silly "innovation".. soo.. is this considered FUD? I also don't support smoking or vaping, especially among kids. Original title had "privacy-violating" before the "solution".
There's no indication they use cameras in there. It's most likely just a sensor for vape smoke, similar to your common fire alarm.
And if it makes bathrooms a place where everyone can breathe without inhaling nicotine, I'm all for it. This is not a serious privacy concern.
Anything that picks anything up in a bathroom is a privacy concern.
In usual schools teachers are required to walk through every bathroom once in every break because the children are hiding in there to skip going in the yard. I do think this is much more annoying though.