They are living in the future.

The security is planned more than a year ahead of time. If there is any place that would be safe for her to perform in front of a large crowd, that is it. That said, I don't disagree that the US is, on average, a very unsafe country. But, while I'd have qualms about a lot of public events, the Super Bowl is not one of them.

Too bad, though. I'd like to see Adele perform.

My guess is that she doesn't want to commit to the Super Bowl and this is a plausible excuse, maybe she hopes it will do some good.

but if the phone calls is coming from inside the house it does much matter, does it?

And Adele has succumbed to that climate. But I think she is overreacting. I think the odds are that she would be perfectly safe. She would probably statistically be in more danger from a traffic accident on the way to a venue. But I understand her fear. The climate we are in now does that to people.