I had a cockatiel as a kid that would sing along with most of the Disney princesses.

Honestly that sentiment depends on where you are in the world.
There are some parts of the world where it’s very common to discuss religion, there are other parts where it’s taboo, like you say, it just depends on where you live in the world.
The cool thing is that the internet has brought us all together. However, I find it common that we also assume that others share the same “common sense” that we do, even when “common sense” itself can vary widely from one community to the next.