Earlier quoted context omitted.
right. My younger sister was stalked by a crazy ex for years. According to some of the people here that would mean she had no right to participate in a regular activity.
Since you're allergic to peanuts that means everybody should be banned from eating peanuts and we should stop growing them, right? While directly providing said stalker with information seems like a harmful, and likely prosecutable behavior, the indirect providing of information is not a burden the general public should bear for another parties already illegal actions.
My kid's school strictly bans peanut products due to at least one kid having a severe and potentially deadly allergy. It seems like a reasonable and necessary precautions to avoid harm or injury.