Pretty much every family has their traditions, and some take them more seriously than others. Some are pretty standard, fun things, like having a specific game that is played during the holidays. Others are a lot more idiosyncratic, and not everybody is going to subscribe to them to the same degree. It’s a matter of taste, which will always differ from person to person.
This is especially true when it comes to the controversial area of beliefs and superstitions. If you are a skeptic but a relative is a diehard fan of this kind of thing, it can become difficult territory to navigate. Being implicated in things that you may think are irrational can be tiring at best and actively disrupt your life at worst. It becomes a big responsibility deciding how much you are willing to entertain some wild things and how much you will let them impact your family relationships.