Yeah, I served my mission in California and I can say there aren't many topics that make strangers more uncomfortable than religion.

At the end of the day, though, I found most people (whether or not they were interested in religion) care about being happy and having purpose and it was/is enjoyable to observe common ground with other humans in that realm.

That being said, lots of people get pissed about religion being shoved in their face and I do not blame anyone as it can be a huge source of trauma.