I see what you are saying but then where do you draw the line? What if the wifi name is “fuck all pilots” - “united is doomed” or “we will all die”?
I already drew the line. Credible threat. Of your three, the last one and I'm not even sure that.
I think advertisements are socially acceptable and actually expected to be as blatantly offensive as possible. How would people react if it were "Boeing go boom. Fly Airbus now! Text 777 NOW for Airbus discounts."
Not OP, but why draw a line for WiFi names at all? Do you think an actual terrorist goes around drawing attention like that?