People who talk about politics and religion at work tend to get hated at best and fired at worst.
People who talk about politics and religion on social media risk getting lectures from relatives and losing friends.
So yeah, people do not talk about politics and religion in America a lot of the time.
Honestly, the only reason my mother-in-law and I have maintained a really good relationship over the decades is because we just don’t talk about religion or politics. My wife and I are pretty much on the opposite side of the map from her on both. So we just don’t talk about it rather than become enemies. Maybe that’s not the right way to go about things, but it’s saved a lot of stress where we don’t need it.