Most Fringe Theorists are magical thinkers
Who have an agenda to procure an afterlife for themselves
Whether it's through old age biblical ascension
Or new age spiritual ascension
And it's all self-serving pseudo-science bullshit.

So yes, religion has a lot to do with nibiru/planet X.

The foundations of religion are mythical in nature
And they are anathema to any and all forms of science.