If someone wants to hold something up as true, its correct to disbelieve it until evidence is provided.
These people don't provide evidence, what they do is show you something cool and then beg the question. "Look at this cool rock in this place it might be hard to get a rock to, really makes you wonder who put it there huh". Literally any dumb science "content producer" is going to be able to get you closer to truth than listening to that bunk.
Not to mention that:
>It's an emotional and spiritual belief for them - a way for them to rationalize
>Put another way, a real practitioner of science would seek to understand the phenomenon of why your family member believes what they believe.
Seems like you quoted them having investigated it.
But having done so you call them a politician.