If you are from the UK, what could you possibly know about the US? I'm atheist and have been since 12 or so. My parents are christian. Never had any issues like you described in my entire life.
Stop believing exaggerated nonsense from for-profit companies like the new yorker as truths. It's more clickbait fiction than anything.
Sure the US may be more religious than other countries. But there are plenty of atheists and agnostics and every other religion and non-religions around. And people get along fine.
Frankly, my perception of the UK ( which I've never visited but I've read about so that makes an exper ) is that the atheists in the UK are far more zealous and militant than the religious in the US. But I'm guessing I know as much about the UK as you do about the US.