I wasn't aware of the meaning of "snaps" as "asks people politely to refrain from harassment".
You seem to be coming from the point of view (that's my assumption based on our short comments; it maybe something else) that it doesn't meet the literal dictionary meaning so it's not a snap - which I disagree with.
I think that's all to it.
It's disingenuous at best to refer to the response as "snapping".