People try to argue in a legalistic way to prove their point that speedcam warnings are allowed. Yet the only people who need to receive the warnings are those who are busy breaking the law at that moment. Note, sometimes that 'law-breaking' is not deliberate - the few speeding fines I have had were almost all due to me not paying attention to my speed, rather than choosing to speed.
The way some people argue the point, it's like they're defending their right to not be caught breaking the law. That's a right I don't believe we should have. Even 'accidental' speeding is still going faster than other road users expect, and can lead to accidents due to misjudging of speed by other drivers.
But in terms of 'demanding' that waze immediately reverse the decision, forget it. They will only do that when they're sure it's legally ok for them to do it, and not because some users want it now. I'm sure they would rather loose some users than risk loosing a court case.
BTW, how many of those who said they would leave, have actually left yet?