The "green dot" appears to be lens flare. There are some techniques for reducing lens flare. There are a few tutorials online and they use variations of the following:
In the Color page of DaVinci Resolve, select the clip with the lens flare...
Do you have a reference for that?
It's not a law, it's a rule for that specific location of the park. If a museum says "no flash photography" in front of an exhibit, that's all they need to put up.
By that argument, anyone could make a fake...